3. Chemical Reactions

A mixture of 1.88 moles of hydrogen and 0.92 moles of oxygen are used in the reaction. According to the balanced chemical equation 2H₂ + O₂ → 2H₂O, how many moles of water would be produced if you used up all the hydrogen?

If 1.688 g of BaCl2·2H2O is mixed with an excess of Na2SO4 to form 200.0 mL of solution, what is the mass of BaSO4 that can form?

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)

If you only have 13.7 g of aluminum metal and an excess of oxygen, what is the theoretical yield of aluminum oxide (Al2O3) in grams?

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?

How many grams of oxygen (O2) are needed to completely react with 1326.76 grams of ammonia (NH3) according to the balanced chemical equation: 4 NH3 + 5 O2 → 4 NO + 6 H2O?

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?

Based on the mole ratios, what can most likely be predicted?