Chemistry Chapter 9: Stoichiometry Questions and Answers Solved 100% Correct!!

Stoichiometry is the branch of chemistry that deals with elements in compounds and with reactants and products in chemical reactions focusing on - Mass relationships Reaction stoichiometry is based on chemical equations and - The law of conservation of mass The number of significant figures in an answer to a stoichiometry problem is determined only by - The number of significant figures of any measured quantities in the problem The chemical equation P₄O₁₀ + 6H₂O 4H₃PO₄ can be interpreted correctly as - 1 molecule of P₄O₁₀ + 6 molecules of H₂O form 4 molecules of H₃PO₄. 1 mol of P₄O₁₀ + 6 mol of H₂O reacts to form 4 mol of H₃PO₄ How many mole ratios can be obtained from the following chemical equation? Na₂S + Cd(NO₃)₂ 2NaNO₃ + CdS - 12 In stoichiometry, molar mass is used to - relate the mass of a substance to the amount in moles of that substance Molar mass can be used to relate - mass of reactant to moles of reactant. moles of product to mass of product. mass of product to moles of product. In the chemical reaction described by the equation 4Fe(s) + 3O₂(g) 2Fe₂O₃(s), the mole ratio of iron(III) oxide to iron is - 1:2What is the unit for the following expression: mass/molar mass? - mol In the chemical equation wA + xB yC + zD, if you know the number of moles of A that react, you can determine - the number of moles of each reactant and product