Exam 3: Mass Relationships in Chemical Reactions

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Zircon is a mineral with the empirical formula ZrSiO4. If all the zirconium is 90Zr, all the silicon is 28Si, and all the oxygen is 16O, what mass of oxygen is present in 10. g of zircon

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What is the coefficient of H2SO4 when the following equation is properly balanced ___ Ca3(PO4)2 + ___ H2SO4 \rarr ___ CaSO4 + ___ H3PO4

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A 0.600 g sample of a compound of arsenic and oxygen was found to contain 0.454 g of arsenic. What is the empirical formula of the compound

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When balanced the coefficient of O2 in the following equation is __ C2H4 + __ O2 \rarr __ CO2 + __ H2O

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Calculate the percent composition by mass of oxygen in Na2CO3.

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Calculate the mass of 3.00 moles of CF2Cl2.

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Sulfur dioxide gas reacts with oxygen gas and water according to the chemical reaction below. When 4.5 g of SO2 are mixed with excess O2 and H2O, how many grams of H2SO4 are produced 2SO2(g) + O2(g) + 2H2O(l) \rarr 2H2SO4(l)

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When 22.0 g NaCl and 21.0 g H2SO4 are mixed and react according to the equation below, which is the limiting reagent 2NaCl + H2SO4 \rarr Na2SO4 + 2HCl

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Calculate the mass of 0.00456 moles of (NH4)2SO4.

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What is the average mass, in grams, of one Rb atom

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What is the mass of 0.55 mole of C6H6

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The mineral manganosite is a compound of 55Mn and 16O. If 77% of the mass of manganosite is due to manganese, what is the empirical formula of manganosite

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Which of the following samples contains the greatest number of atoms

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Which of the following NH3 samples contains the greatest number of moles of NH3

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