3. Chemical Reactions

How many grams of KNO_3 (formula weight 101.1 g/mol) are required to prepare 1.00 L of a solution containing 125 mg/L of nitrogen (N)?

In the reaction N2 + 3H2 → 2NH3, which of the following is the correct method to convert moles of N2 to moles of NH3?

When one formula unit of MgBr_2 is dissolved in water, how many individual ions are produced?

Based on the mole ratio you determined in part c, how many moles of H2O are produced when 2 moles of H2 react completely with excess O2 according to the equation: 2 H2 + O2 → 2 H2O?

In the following equation how many moles of aluminum chloride are produced from 2.50 mol of hydrochloric acid?

2 Al (s) + 6 HCl(aq) → 2 AlCl₃ (aq) + 3 H₂ (g)

A 3.00 L solution of 0.0200 M ammonium sulfide ((NH_4)_2S) is prepared. What is the mass of (NH_4)_2S present in the solution? (Molar mass of (NH_4)_2S = 68.15 g/mol)

If 5 moles of Cl_2 react completely with excess Na according to the equation 2 Na + Cl_2 → 2 NaCl, how many moles of NaCl are produced?

Given the following data table for the reaction: 2 H2 + O2 → 2 H2O, if you start with 4.0 mol of H2 and 2.0 mol of O2, how many moles of H2O will be produced?

Given the reaction: Fe3O4 + 4 H2 → 3 Fe + 4 H2O, how many grams of Fe3O4 are required to react completely with 300 grams of H2?

How many coulombs of charge are required to produce 101 g of Al from Al^{3+}(aq) by electrolysis? (Faraday's constant, F = 96,500 C/mol)

Based on the mole ratios in the balanced equation 2H2 + O2 → 2H2O, how many moles of H2O are produced when 4 moles of H2 react completely with excess O2?

How many grams of KOH are required to prepare 400 mL of a 0.350 M KOH solution?

In the reaction 2 H2 + O2 → 2 H2O, how many moles of water are produced when 4 moles of hydrogen gas react completely with excess oxygen gas?

In the reaction 2 H_2 + O_2 ightarrow 2 H_2O, how many moles of O_2 are required to react completely with 1.67 mol H_2?