3. Chemical Reactions

When 0.100 mole of BaCl_2 reacts completely with excess Na_2SO_4 according to the equation BaCl_2 + Na_2SO_4 → BaSO_4 + 2NaCl, how many moles of BaSO_4 are produced?

In the reaction N_2 + 3H_2 → 2NH_3, how many moles of hydrogen gas (H_2) are required to completely react with 0.85 moles of nitrogen gas (N_2)?

In a balanced chemical equation, how are the coefficients used to determine the number of atoms of each element present in the reactants and products?

A solution contains 34.2 grams and is 45.5% by mass NaF. How many moles of NaF are present in the solution?

When 27 grams of Al reacts completely with excess O_2, how many moles of Al_2O_3 are formed?

Given the reaction: Fe + CuO → FeO + Cu, how many grams of Fe are required to react completely with 162.8 grams of CuO?

Given an excess of nitrogen gas, how many grams of Li3N can be formed from 1.75 moles of Li? (Molar mass of Li3N = 34.83 g/mol)

When acetic acid (HC2H3O2) reacts with calcium hydroxide (Ca(OH)2) in a neutralization reaction, what is the stoichiometric ratio of HC2H3O2 to Ca(OH)2?

Why is it necessary to use a balanced chemical equation when performing stoichiometry calculations?

If a reaction produces 0.75 moles of Na2SO4, how many grams of Na2SO4 are formed? (Molar mass of Na2SO4 = 142 g/mol)

Given excess oxygen, how many moles of H_2O can be produced from 12.5 moles of C_4H_{10} in the complete combustion reaction: C_4H_{10} + O_2 ightarrow CO_2 + H_2O?

Given that the molar mass of O_2 is 32.00 g/mol, how many moles of HgO are required to produce 250.0 g of O_2 according to the reaction 2 HgO → 2 Hg + O_2?

Which type of stoichiometric calculation does not require the use of the molar mass?

When 44 grams of propane (C_3H_8) are completely combusted in excess oxygen, how many grams of water (H_2O) are produced?

A dime weighs 2.5 g. If 1 kg of dimes is collected, what is the total dollar value of these dimes?