D) 6, 1, 3, 2 A) molecular only. B) CH2O D) Yes, the formation of a gas is proof a new compound has been made. B) acid-base neutralization B) 2, 3, 2, 2 B) aluminum sulfide A) describes the mass relationships in a molecule. D) double-displacement A) 2Cr + 6HCl 2CrCl3 + 3H2 The only difference is in step 2 you convert volume of reactant (or product) to moles. C) 1, 2, 1/2, 1 E) none of the above, What are the coefficients for the following reaction when it is properly balanced? E) none of the above, 26) All of the following compounds are soluble in water EXCEPT: Given the following percent composition, what is the molecular formula? A) The sodium chloride solid has dissociated into its component ions. A) C4H14 Be notified when an answer is posted. A) 2, 1, 1, 1 c. It has a molar mass of 174.3 g. b. C) oxidation-reduction D) gas evolution reaction. The mass of H 20 is equal to the mass of the moles. C) magnesium bromide What is the mass of 0.560 moles of chlorine gas? A) precipitation One mole of iron (III) sulfate contains 3 moles of SO42- ions. Rank the following objects from highest to lowest in terms of momentum and from highest to lowest in terms of energy. What is the molar mass of aluminum sulfate? E) none of the above, 60) A redox reaction has occurred ________. Of HNO3 is =63/1=63 Hope u like it . D) water with another compound dissolved in it. B) 0.371 C) 8 In comparing a balloon containing 25 grams of helium to a balloon containing 25 grams of neon, which one of the following statements is TRUE? Which of the following statements about the mole is FALSE? One mole of potassium sulfate contains: A) 4 moles of oxygen. Pb(NO3)2(aq) + 2KI(aq) PbI2(s) + 2KNO3(aq) E) none of the above, Bananas cost 33 per pound. How many moles of Cu are in 1.48 1025 Cu atoms? A) 22.99 A) An empirical formula represents a molecule. C) Pb A) C22H34O10 C) Pb(NO3)2 B) 25.8 Which of the following is NOT evidence that a chemical reaction has occurred? 12.8. C) 2,430 B) The mass of 1 mole of magnesium is greater than the mass of 1 mole of carbon. In one roll, we have one mole of chloride. E) Cr3O2, An iron chloride compound contains 55.85 grams of iron and 106.5 grams of chlorine. A) 3.13 10-2 B) 2 moles of sulfur. When two sparingly soluble salts A) 3 moles of hydrogen. B) when an alkali metal reacts with an alkaline earth metal D) N4H4 E) All of the above are evidence of a chemical reaction. Label: PSORIZIDE ULTRA- potassium bromide, nickel sulfate, and zinc bromide tablet C) A net ionic equation is an equation showing only the species that actually participate in the reaction. C) Cr2(SO4)3 + 6KOH 2Cr(OH)3 + 3 K2SO4 19.2. C) 207.2 A. B) 2 absorbing the light when chemicals are contacted with earch other, When water is heated, bubbles form in the water. E) none of the above, What is the mass of 3.91 x 1024 sulfur atoms? 1 mole of potassium. 342.2 g/mol HOw many moles of carbon are in 3.5 moles of calcium carbonate ? B) 1.69 A) 5.86 1023 How many moles of iron are contained in 1.75 kg of iron? A) AgO A) 18.02 C) 2 moles of oxygen atoms. What is the mass percent of chlorine in hydrochloric acid? B) 4 moles of oxygen Calculate the molar mass of ammonium carbonate. B) Yes, the formation of a gas is evidence of a chemical reaction. What is the formula of the oxide? A) 93.7 40% C, 6.7% H, 53.3% O. E) none of the above, A chromium oxide compound contains 104.0 grams of chromium and 48.0 grams of oxygen. In your case, you have 0.400 moles of ptoassium sulfate, which means that you have 0.400moles K2SO4 2 moles K 1moles K2SO4 = 0.800 moles K A) 28.01 Determine the empirical formula of ascorbic acid if it is composed of 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen. A) iron(III) chloride. D) 44.01 C) C2H7 A) 78.05 g/mol Calculate the molarity if a flask contains 1.54 moles of potassium sulfate in 125 ml of solution..? It contains six atoms in total. How many moles of Cu are in 1.48 1025 Cu atoms? Before a chemical equation can be written, one must know: A large beaker contains 1.50 L of a 2.00 M iron(III) chloride solution. E) none of the above, Determine the empirical formula of a compound containing 60.3% magnesium and 39.7% oxygen. E) none of the above, An estrogen compound with the empirical formula C12H17O2 has a molecular mass of 386.6 g/mol. E) none of the above, An iron ore sample is found to be 35.00% Fe by mass. C) water with a molecular compound dissolved in it. A) SO42- 1 mole of N2 contains 12.0441024 N molecules. Experts are tested by Chegg as specialists in their subject area. D) 1, 1, 2, 2, 17) When the equation __Ca3N2 + __H2O __Ca(OH)2 + __NH3 is balanced, the coefficient of H2O is: How many moles of carbon are in 3.5 moles of calcium carbonate? 32.0 g C. 6.022 x 1023 g D. 8.0 g E. none of the above 3. What must be supplied for a decomposition reaction to happen? as the number of atoms in a sample of pure 12C weighing exactly 12 g. One Latin connotation for the word "mole" is "large mass" or "bulk," which is consistent with its use as the name for this unit. 96.09 g/mol. 2.5L of 1M K 2SO 4 contains (2 2.5) that is 5 moles of Potassium ions. C) 6.76 How many molecules of sulfur trioxide are in 78.0 grams? D) 3 moles of potassium. B) 2HCl + K(OH)2 2H2O + KCl2 E) PbCl2, The compound sodium sulfate is soluble in water. A) 2.44 B) 13.3 B) 2, 1, 2, 2 C) when one substance transfers protons to another B) 2.70 x 1024 C) 7.6 ___O2 + ___CH4 ___CO2 + ___H2O Find the amount (mol) of one substance from the volume and molarity. One mole of ammonium nitrite contains: 100 grams Potassium Sulfate to mol = 0.57386 mol. D) 3 moles of potassium E) none of the above 14) 14) The oxygen-to-hydrogen mass ratio of water is always 80 is an example of what fundamental law? Mole removal is frequently completed working with surgical procedures. D) the number of moles of all reactants and products. Calculate the molar mass of calcium nitrate. 2003-2022 Chegg Inc. All rights reserved. Which compound would not form ions in the complete ionic equation? How many moles are there in 82.5 grams of iron? And for part a your told K C L cost 55 cents per kilogram and we're supposed to find for what price of potassium sulfate could supply the same amount of potassium on the same price basis. E) none of the above, A 42.7 gram sample of potassium nitrate contains how many grams of potassium? (a) AB^-4 (tetrahedral), (b) AB2 (linear), (c) AB^-6 (octahedral), (d) AB^-3 (pyramidal), Name the conservation law that would be violated in each of the following decays: (a) $\pi^{+} \rightarrow \mathrm{e}^{+}+\gamma$ (b) $\Lambda^{0} \rightarrow \mathrm{p}+\mathrm{K}^{-}$ (c) $\Omega^{-} \rightarrow \Sigma^{-}+\pi^{0}$ (d) $\Lambda^{0} \rightarrow \pi^{-}+\pi^{+}$ (e) $\Lambda^{0} \rightarrow \mathrm{n}+\gamma$ (f) $\Omega^{-} \rightarrow \Xi^{0}+\mathrm{K}$ (g) $\Xi^{0} \rightarrow \Sigma^{0}+\pi^{0}$ (h) $\mu^{-} \rightarrow \mathrm{e}^{-}+\gamma$. E) none of the above, What are the coefficients for the following reaction when it is properly balanced? D) One mole of water contains 1/2 mole of oxygen atoms. D) C2H14 In the first step of this process, the hydrogen sulfide is burned to obtain sulfur dioxide, SO2. 2 moles of sulfur C. 1 mole of potassium D. 3 moles of potassium E. none of the above 2. You have 10.0 g each of Na, C, Pb, Cu and Ne. C) 20.04 g/mol A) Law of Constant Whole Number Ratio B) Law of Constant Composition C) Law of Constant Mass. E) none of the above, What is the mass of 3.09 1024 atoms of sulfur in grams? One mole of potassium sulfate (K2S04) contains: A. A compound has a molar mass of 180.15 g/mol. E) none of the above, What is the mass (in grams) of 1.95 moles of water ? E) All the above ions are in the complete ionic equation. One mole of (NH4)2HPO4 contains how many moles of hydrogen atoms? D) magnesium nitrate So in order to solve this problem, we were the first have to calculate the Moeller master both K C l. And for K two. We'll do it for the next one. Considering the following precipitation reaction: A) KO D) 3.11 x 1024 What is the most likely empirical formula of this compound? It contains one sulfur atom. Given the following percent composition, calculate the molecular formula: An unknown acid has a molar mass of 60.05 g/mol. D) 350.0 B) When coefficients are added the type of compounds is changed in the chemical reaction. A) 2, 1, 3, 1 C) 3 Recommended videos Powered by AnyClip B) 384.4 Balance the below equation by inspection : D) the number of moles of hydrogen peroxide in 1.00 g of the substance. C) 2 moles of sulfur. Mass of water = 18 g/mol. 13) One mole of potassium sulfate contains: 13) A) 4 moles of oxygen. C) 0.2500 B) 4 B) 102.09 g/mol B) 0.0630 Among GBMs, graphene oxide (GO) nanoflakes, showing good dispersibility in water solution and being rich of functionalizable oxygen groups, are ideal core structures . C) precipitation reaction. A) 40.08 g/mol a) an asteroid with mass $10^6 \mathrm{~kg}$ and speed $500 \mathrm{~m} / \mathrm{s}$, C) 35.1 B) 2NaHCO3 Na2CO3 + CO2 + H2O B) decomposition 32.0 g C. 6.022 x 1023 g D. 8.0 g E. none of the above 3. E) none of the above, Ddx II: Tinnitis, epistaxis, and weakness, Late Adulthood: Physical and Cognitive Develo, Lecture 8 Degenerative/ Chronic D/O of the Ne. 342.2 g/mol. E) none of the above, In comparing 1 mole of carbon atoms to one mole of magnesium atoms, which statement is TRUE? A) Pb2+ B) combustion reaction. B) A mole of a monatomic element corresponds to one Avogadro's number of atoms. Which contains the smallest number of moles? C) single displacement Which ion would NOT be present in the complete ionic equation? D) 6.022 1023 C) magnesium iodide One mole of water contains 1/2 mole of oxygen atoms. A) 0.00782 Nanoscale graphene-based materials (GBMs) enable targeting subcellular structures of the nervous system, a feature crucial for the successful engineering of alternative nanocarriers to deliver drugs and to treat neurodisorders. Which contains the largest number of moles? How many atoms are in 1.50 moles of fluorine gas? Zn(s) + Cu2+(aq) Zn2+(aq) + Cu(s) 4 moles of oxygern B. D) 438 50 grams Potassium Sulfate to mol = 0.28693 mol. A 7.96 gram sample of silver reacts with oxygen to form 8.55 gram of the metal oxide. C) The solution will taste salty. D) light B) 2.09 1025 What is the most likely empirical formula for this compound? Which of the following statements about empirical formulas is incorrect? A) 3.7 x 1023 3. B) 3.34 1023 An empirical formula represents a molecule. D) strontium carbonate We review their content and use your feedback to keep the quality high. VIDEO ANSWER: We are going to use the most small masks and elegant dress number to solve the given question. H2O Add an answer. Bauxite is an ore that contains the element aluminum. B) 1 C) (l) D) water with another compound dissolved in it. Find the electric field at the following distances from the sphere's center: Assume that a woman must breathe a constant mass rate of air to maintain her metabolic processes. These drain into \_\_\_\_\_\_\_\_\_\_ ducts that converge toward the nipple. 2 moles of sulfur C. 1 mole of potassium D. 3 moles of potassium E. none of the above 2. D) C2H2O4 A) 2 moles of nitrogen atoms. Chemistry 1 Answer SCooke May 30, 2018 12.32M Explanation: Molarity is defined in chemistry as the number of moles of a substance per liter of solution. E) none of the above, How many atoms are in 15.6 grams of silicon? B) An empirical formula gives the smallest whole number ratio of each type of atom in a molecule. B) KO2 B) CH2O Explanation: Here, we use the mole as we would use any other collective number: a dozen eggs; a Bakers' dozen; a Botany Bay dozen. E) none of the above, What are the coefficients for the following reaction when it is properly balanced? E) no reaction, When a solution of MgCl2 and one of AgNO3 are mixed, the net ionic equation is: You have 10.0 g each of Na, C, Pb, Cu and Ne. What is the most likely empirical formula for this compound? E) none of the above, A 15.5 gram sample of diphosphorous pentoxide contains how many grams of phosphorous? A 42.7 gram sample of potassium nitrate contains how many grams of potassium? How many atoms are in 15.6 grams of silicon? C) single displacement One mole of potassium sulfate contains: 4 moles of oxygen. I wish to bye then. You have 10.0 g each of sodium, iron, silver, zinc and neon. A) H2Cl + 2KOH H2O +2KCl D) 6.02 x 1023 D) Mn3O2 D) 11.2 How many molecules of nitrogen monoxide are in a 22.5 gram sample? It was also known as vitriolic tartar and Glaser's salt or sal polychrestum Glaseri after the pharmaceutical chemist Christopher Glaser . and stirred until the solution became homogeneous. C) Mg2+(aq) + 2NO3-(aq) Mg(NO3)2(aq) A 500. gram iron ore sample was determined to contain 242 grams of iron. You now add 0.500 L of a 4.00 M lead(II) nitrate solution to the beaker. B) CH2O B) acid-base neutralization ___potassium iodide + ___lead (II) acetate ___lead (II) iodide +___potassium acetate A 15.5 gram sample of diphosphorous pentoxide contains how many grams of phosphorous? c. It has a molar mass of 174.3g.. 2H2S(g)+3O2(g)2H2O(l)+2SO2(g);H=1124kJ The density of sulfur dioxide at 25C and 1.00 atm is 2.62 g/L, and the molar heat capacity is 30.2 J/(mol C). B) 4 moles of hydrogen atoms. E) None of A, B, and C. One mole of potassium sulfate contains: D) 13.5 A) NH B) empirical only. 16. D) HCl + KOH H2O + KCl In15 grams there are then 86.1 millimoles of K2SO4. A) 2 11.Convert 5.2 x 10^25 formula units of mercury (II) hydrogen sulfate to moles This problem has been solved! 4. A nonconducting sphere of radius 6.00cm6.00 \text{~cm}6.00cm has a uniform volume charge density of 450nC/m3450 \text{nC} / \text{m}^3450nC/m3. D) gas evolution reaction 2 moles of sulfur. D) 47.5 How many moles of iron ions are in the solution? E) Cs. H2 A) CrO B) 1 and 3 only E) none of the above, If 3.011 molecules have a mass of 20.04 grams, what is the molar mass of this substance? One mole of potassium sulfate contains: Replies Answer accepted by topic starter Solved In the gas phase one mole of N2 and three moles of H2 react to form two moles of NH3? E) none of the above, A reaction which forms a gaseous product is an example of a(n)________. A) 2.64 1026 Which contains the smallest number of moles? An iron chloride compound contains 55.85 grams of iron and 106.5 grams of chlorine. The pilot decides to accomplish this by banking the wings at an angle of $38^{\circ}$ while moving in a level circular path. E) none of the above, A compound composed of only hydrogen and oxygen is 5.94% hydrogen by mass. D) 5 B) combustion reaction. In this case, you know that one formula unit of sodium chloride, NaCl, contains one sodium cation, Na+, and one chloride anion, Cl. A) 2, 1, 1, 1 D) 4.06 1023 A) 2, 1, 1, 2 D) 47.1 D) C6H12O6 Answer: D, 21) An aqueous solution is: 1. A) CHO b. C) 31.3 The chemical formula CH2O can be classified as: A chromium oxide compound contains 104.0 grams of chromium and 48.0 grams of oxygen. E) none of the above, 24) Which of the following compounds is SOLUBLE? E) none of the above, A compound has a molar mass of 180.18 g/mol. B) C6H6 D) 32.0 g O2 How many moles of fluorine are in 3.2 moles of xenon hexafluoride? A) when a substance reacts with elemental oxygen D) 4NH3 + 14O2 4NO2 + 6H2O B) lithium carbonate C) 1.62 x 1024 What is the most likely empirical formula of this compound? E) none of the above, What is the mass of 1.56 1021 atoms of magnesium in grams? Which equation below best describes the balanced equation for this reaction? A) aluminum hydroxide A) 22.4 What is the value of n when the empirical formula is C3H5 and the molecular mass is 205.4 g/mol? E) none of the above, Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chloride are needed to have 950 mg of Na present? Which means, each mole of Potassium sulphate contains two moles of Potassium ions. 96.09 g/mol. A) 2 moles of nitrogen atoms. E) none of the above, Bauxite is an ore that contains the element aluminum. E. none of the above, A 500. gram iron ore sample was determined to contain 242 grams of iron. E) All statements are correct, An empirical formula represents a molecule, The empirical formula of a compound: Vitamin C is known chemically by the name ascorbic acid. 3.5. What is the correct value for Avogadro's number? E) All the above ions are in the net ionic equation. B) 9.91 1025 When this compound dissolves in water, which ion listed below would be present in solution? A) 52.9 C) 5 Which ion(s) would NOT be present in the net ionic equation? You have 10.0 g each of sodium, iron, silver, zinc and neon. E) All of the statements are true. A) energy D) 3.00 E) none of the above, Which of the following is already in its empirical formula? B) 3.7 x 10-25 Which of the following best describes one mole of potassium sulfate, K,SO,?*. C) precipitation reaction one mole of potassium sulfate contains what, calculate the molar mass of ammonium carbonate, calculate the molar mass of calcium nitrate. E) none of the above, The mass of 1 mole of magnesium is greater than the mass of 1 mole of carbon, Which of the following contains 9.02 1023 atoms? Science Chemistry Chemistry questions and answers 13) One mole of potassium sulfate contains: 13) A) 4 moles of oxygen. See Answer One mole of copper (II) sulfate, CuSO4 , contains ________ O atoms. E) none of the above, ) What type of a reaction occurs when a potassium nitrate solution is mixed with a barium acetate solution? C) indicates the structure of the molecule. A) 4 moles of oxygen. If 2.01 1023 atoms of an element from Group IA of the periodic table has a mass of 7.675 grams, this element is most likely. A) 208 D) A spectator ion remains unchanged in the reaction and appears on both sides of the equation. C) 5.60 A) 1297 D) I- D) 0.160 Request Answer. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. C) 2, 3, 6, 1 B) C D) not enough information E) none of the above, What is the mass percent of hydrogen in water? D) 1.48 B) 158.9 B) decomposition The concentration for the chloride is the same as before. B) K+ D) Cl-(aq) + Ag+(aq) AgCl(s) The solvent was removed under high vacuum and the remaining residue was purified directly by flash column . An iron ore sample is found to be 35.00% Fe by mass. E) none of the above, ) If you have 2.41 x 1024 atoms of copper, how many moles of copper do you have? A) copper carbonate A) acid-base reaction. E) All the above ions are in the complete ionic equation. E) none of the above, What are the coefficients for the following reaction when it is properly balanced? Tags: Question 18 . 342.2 g/mol. Which contains the smallest number of moles? C) H+ + OH- H2O E) none of the above, How many moles are there in 82.5 grams of iron? Given the following percent composition, what is the molecular formula? E) none of the above Determine the empirical formula of ascorbic acid if it is composed of 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen. B) CH3O2 C) The neon balloon has more atoms. E) none of the above. If you obtained 108 grams of aluminum from an ore sample that initially weighed 204 grams, what is the mass percent of aluminum in this bauxite ore? Table 1 Ground state reactions employed in the . E) none of the above, The chemical formula CH2O can be classified as: C) 96.09 g/mol C) 21.4 Answer : One mole of copper (II)sulfate contains number of oxygen atoms. B) 12.8 D) indicates the simplest ratio of atoms in the compound. E) none of the above. B) magnesium sulfate A) 34.02 C) 1 mole of potassium. What is the value of n necessary to find the molecular formula? Select appropriate equivalent molar ratio. B) Na. C) 74.2 Use standard atmospheric conditions. I hope this solved your question. B) 1.73 A cation is the positive. B) The helium balloon has more atoms. What is the angle to the third-order principal maximum (m = 3) when light with a wavelength of 426 nm shines on a grating with a slit spacing of $1.3 \times 10^{-5} \mathrm{m}$? One mole of water contains 1/2 mole of oxygen atoms. density of potassium sulfate is equal to 2 660 kg/m; at 20C (68F or 293.15K) at standard atmospheric pressure . B) 2 A) Na One mole of potassium sulfate contains: 4 moles of oxygen. In chemistry, we use the unit 'mole' to represent the amount of substance containing 6.02 10 23 particles. O It contains six atoms in total. B) 9.00 g H2O C) 10 D) The molecular formula can be the same as the empirical formula in some situations. d) a $10-\mathrm{kg}$ cannonball with a speed of $120 \mathrm{~m} / \mathrm{s}$, C) Mg2O3 D) 5.050 He or she would either excise aspect of the mole, ie a modest tissue sample for . A) CHO D) 100.09 C) 1 mole of potassium. Hence, 1 mol of the same contains 2 mol of potassium, 1 mol of sulfur and 4 mol of oxygen. potassium sulfate is an excellent source of potassium for plants potassium chloride, potassium sulfate and potassium nitrate are used in agriculture, horticulture and hydroponics potassium sulphate (k2so4) is a non-flammable white crystalline salt which is soluble in water sulfate compounds are salts or esters of sulfuric acid formed by replacing It contains six atoms in total. B) acid-base neutralization This is from the items of Neon. D) The NaCl will fail to dissociate. Calculate the molar mass of ammonium carbonate. 0.0098 mol) was dissolved in acetone(20 ml) followed by addition of potassium carbonate(1.5 g, 0.025 mol), dime-thyl sulfate(1.8 g, 0.0147 mol) at room temperature, fur-ther maintained under reux for 3-4 h, cooled to room temperature and ltered to remove excess potassium car-bonate. E) All of the above are signs of a chemical reaction. D) 16 Gram equivalent wt. C) 3, 2, 2, 1 C) 1 mole of potassium.D) 3 moles of potassium. C) emission of light when chemicals are contacted with each other B) CHO2 E) none of the above, 16) What are the coefficients for the following reaction when it is properly balanced? C) aluminum carbonate Calculate the molar mass of ammonium carbonate. If you obtained 108 grams of aluminum from an ore sample that initially weighed 204 grams, what is the mass percent of aluminum in this bauxite ore? Which of the following contains the least number of atoms? C) 2, 2, 2, 1 Fig.1 Experimental ferrous ion concentration ( ) and simulated data (solid line) during the irradiation process at pH 3.0 in: (A) the absence of chloride or sulfate ions; (B) [Cl-] = 0.75 mol L-1, absence of sulfate ions; (C) [SO 4 2] = 1.8 mmol L-1, absence of chloride ions, and (D) at pH 1.0 with [Cl ] = 0.75 mol L-1, absence of sulfate ions. E) none of the above, How many moles of carbon are in 3.5 moles of calcium carbonate? C) 0.761 A) 1 and 2 only One mole of iron (III) sulfate contains 12 moles of oxygen atoms. A) 221 You have 10.0 g each of Na, C, Pb, Cu and Ne. To determine its molecular formula, it is necessary to know: The symbol of mole is mol. E) All of the statements are true. E) none of the above, What is the molar mass of aluminum sulfate? Echemi provides reliable and worth Potassium Sulfate price analysis & professional market analysis, helping you to find the best Potassium Sulfate suppliers Content of sulfate Transfer about 1g of Glucosamine Sulfate Potassium Chloride,accurately weighed,to a 250-mLbeaker,and . ___Na3PO4 + ___Ba(NO3)2 ___NaNO3 + ___Ba3(PO4)2 D) 34.5 B) 16.5 B) 48.4 Considering the following precipitation reaction: What is the compound's molecular formula? C) 2 moles of nitrogen. D) 4 The empirical formula for this compound is: A) A molecular equation is a chemical equation showing the complete, neutral formulas for every compound in a reaction. A) NaCl. B) 3.8 How many grams of ore are needed to obtain 454g of Fe? B) an ionic compound with water dissolved in it. D) All of 1 and 2 only A) Individual sodium and chloride ions are present. A) precipitation Determine the correct empirical formula of a compound containing 26.68% carbon, 2.24% hydrogen, and 71.08% oxygen. A) MnO What is the molecular formula of a compound given the molar mass of the compound is 30.04 gram and the empirical formula is NH? E) None of 1, 2, and 3, What type of a reaction occurs when potassium metal reacts with fluorine gas? PUGVIEW FETCH ERROR: 403 Forbidden National Center for Biotechnology Information 8600 Rockville Pike, Bethesda, MD, 20894 USA Contact Policies FOIA HHS Vulnerability Disclosure National Library of Medicine National Institutes of Health C) The mass of 1 mole of carbon is the same as the mass of 1 mole of magnesium. Define symbiosis and differentiate among mutualism, commensalism, syntrophy, parasitism, and amensalism, using examples. B) 10.02 g/mol A) C2H3O2 A) CH 0.25 What is the formula of the oxide? a. D) aluminum sulfide C) K. D) Ag3O D) 37.1 C) 2 and 3 only 3 moles of potassium. The mole is thus the link between the micro world of atoms and molecules, and the macro world of grams and litres, the which we can easily measure by mass or volume. 10 grams Potassium Sulfate to mol = 0.05739 mol. the symbols and formulas of all reactants and products, When the equation, ___N2 + ___H2 ___NH3 is balanced, the coefficient of hydrogen is: 36) One mole of potassium sulfate contains:A) 4 moles of oxygen. B) 1 mole of potassium. 2 Mg(s) + O2(g) 2 MgO Pb(NO3)2(aq) + 2KI(aq) PbI2(s) + 2KNO3(aq) A) 136.03 g/mol C) 0.53 As 1 mole of copper (II)sulfate contains number of oxygen atoms. E) none of the above, How many molecules of nitrogen monoxide are in a 22.5 gram sample? In order to find the volume I can write, I have to substitute the value for the number of moles. Experts are tested by Chegg as specialists in their subject area. E) none of the above, 18) When the equation __NO2 + __H2O + __O2 __HNO3 is balanced, the coefficient of HNO3 is: answer choices . E) none of the above, Several grams of sodium chloride are stirred into a glass of water and are no longer visible to the eye. D) Sodium chloride is insoluble in water. E) none of the above. 22) Which of the following compounds is INSOLUBLE? D) Cu A mole is defined as the amount of substance containing the same number of discrete entities (atoms, molecules, ions, etc.) E) none of the above D ) 4 moles of oxygen . B) 0.472 D) 12 If she inhales and exhales 16 times per minute at sea level, where the temperature is 59F^{\circ}FF (15C^{\circ}CC) and the pressure is 14.7 psia (101 kPa), what would you expect her rate of breathing at 18,000 ft (5486 m) to be? E) none of the above, A reaction in which a substance reacts with oxygen, emitting heat and forming oxygen-containing compounds is an example of a(n): B) 2 moles of sulfur. A) 3 A) C3H4O3 A) 39.1 B) 7.33 1023 C) Fe2Cl E) none of the above, How many hydrogen atoms are in 35.0 grams of hydrogen gas? b) a high-speed train with a mass of $180,000 \mathrm{~kg}$ and a speed of $300 \mathrm{~km} / \mathrm{h}$, Explain. B) CrO2 Coefficients are added to compounds to ensure both sides of the reaction have equal numbers of each atom. D) Na22+ An airplane traveling at $510 \mathrm{~km} / \mathrm{h}$ needs to reverse its course. B) 3 Which of the following statements about writing molecular, complete and net ionic equations is FALSE? 3. Solution : As we know that, 1 mole of contains number of atoms. Potassium sulfate has a molar mass of 174.259 grams per mole. E) none of the above, Determine the correct empirical formula of a compound containing 26.68% carbon, 2.24% hydrogen, and 71.08% oxygen. The subsequent step is to seek the advice of a dermatologist. E) All compounds form ions in the complete ionic equation. D) Cu If 17.1g of potassium reacts with 14.3g of fluorine, which reactant is the limiting reactant, and what mass of potassium fluoride can theoretically be produced? B) 2 moles of sulfur. E) none of the above, How many atoms of lithium are in 18.7 g? You would then divide the moles and potassium hydroxide by its volume, the measured volume of 0.1 leaders in order to determine the concentration of potassium . What is the mass percent of iron in the ore? B) 1 mole of potassium. D) C3H4O3 C) 19.2 Which of the following statements about balancing reactions is FALSE? B) 2 B) decomposition A) H2O (l) 88.8% How many grams of carbon atoms are present in 45.0g of CCl4? A) 0.02 200 grams Potassium Sulfate to mol = 1.14772 mol. B) 278.0 g/mol Which of the following best describes one mole of potassium sulfate, K2SO4? Determine the mass of solid product formed (in grams). C) Na + H2O NaOH (aq) + H2 (g) A) Na 8.Convert 8.88 mol of dinitrogen tetrahydride to molecules. C) 28.0 g N2 What is the molar mass of aluminum sulfate? E) none of the above. E) none of the above, What is the mass (in grams) of 3.03 1024 molecules of carbon dioxide molecules? Calculate the mass of one mol of oxygen gas. D) C3H9O4 B) AgO2 Potassium is the chemical element with the symbol K (from Neo-Latin kalium) and atomic number 19. C) oxidation-reduction 2. With potassium carbonate; In dimethyl sulfoxide; at 80; for 4h; . D) C6H12O6 Calculating the mass of one mole of a species from its formula. Which contains the largest number of moles? 1 mole of ferric sulfate contains 2 moles of iron, and 12 moles of oxygen atoms, and three moles of sulfate ions. A) 2.8 From molarity we can say: 1L of 1M K 2SO 4 contains 2 moles of Potassium ions. One mole of boron has a mass of ________ g. One mole of oxygen gas has a mass of ________ g. What is the mass in grams of 5.40 moles of lithium? D) H2 (g) e) a proton with a mass of $2 \cdot 10^{-27} \mathrm{~kg}$ and a speed of $2 \cdot 10^8 \mathrm{~m} / \mathrm{s}$. B) 0.303 Calculate the mass of one mol of oxygen gas. C) precipitation reaction. C) 3 The mass of one mole of carbon dioxide is ________ g. In comparing 1 mole of carbon atoms to one mole of magnesium atoms, which statement is TRUE? 1.0 mole C6H14 B. D) 4, In writing the chemical equation for a precipitation reaction, what abbreviation of the physical state must appear with one of the products? For one more of neon, 2 times 10 to What is mass of 0.560 moles of chlorine gas? With potassium-t-butoxide In 1-methyl-pyrrolidin-2-one at 25; for 4h; 79%: With potassium-t-butoxide In 1-methyl-pyrrolidin-2-one at 20; for 4h; . C) CrO3 A) 2, 1, 1, 1 E) none of the above, What are the coefficients for the following reaction when it is properly balanced? NaCl(aq] Na+ (aq] + Cl (aq] C) magnesium chloride. D) 1.05 1025 Firstly, We must learn how to identify a mole that could potentially be cancerous. A) 0.2 A) FeCl C) 0.142 B) 1.05 1025 A) synthesis/combination How many moles of carbon are in 3.5 moles of calcium carbonate? \text{$\mathrm{SO}_2 \mathrm{Cl}_2+\mathrm{HI} \longrightarrow \mathrm{H}_2 \mathrm{~S}+\mathrm{H}_2 \mathrm{O}+\mathrm{HCl}+\mathrm{I}_2$} If a sample of carbon dioxide contains 3.8 moles of oxygen atoms, how many moles of carbon dioxide are in the sample? C) 306.2 g/mol The milk-secreting glandular cells of the breast are arranged in grapelike formation called formation \_\_\_\_\_\_\_\_\_\_. contains 6.02 x 1022 molecules O It contains one sulfur atom none of the answers are correct. 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