Stoichiometry and Stoichiometric Calculations - Introduction

Calcium carbonate reacts with aqueous HCl to give CaCl₂ and CO₂ according to the reaction,

\[\ce{CaCO_{3(s)} + 2 HCl_{(aq)} → CaCl_{2(aq)} + CO_{2(g)} + H2O_{(l)}}\]

What mass of CaCO₃ is required to react completely with 25 mL of 0.75 M HCl?

Production of iron in a blast furnace follows the following equation:

\[\ce{Fe3O4 (s) + 4CO (g) -> 3Fe (l) + 4CO2 (g)}\]

When 4.640 kg of Fe₃O₄ and 2.520 kg of CO are allowed to react then the amount of iron (in g) produced is:

[Given: Molar Atomic mass (g mol⁻¹): Fe = 56

Molar Atomic mass (g mol⁻¹): O = 16

Molar Atomic mass (g mol⁻¹): C = 12]

Chlorine is prepared in the laboratory by treating manganese dioxide (MnO₂) with aqueous hydrochloric acid according to the reaction

\[\ce{4HCl_{(aq)} + MnO_{2(s)} → 2H2O_{(l)} + MnCl_{2(aq)} + Cl_{2(g)}}\]

How many grams of HCl react with 5.0 g of manganese dioxide?

What mass of CaCl₂ in grams would be enough to produce 14.35 gm of AgCl?