3. Chemical Reactions

Which of the following compounds produces the greatest number of moles of ions per mole of formula units when dissolved in water?

What mass of Na2SO4 is required to prepare 2.5 L of a 2.0 M solution?

How many chloride ions are present in 65.5 mL of 0.210 M AlCl_3 solution?

How many milliliters of a 0.155 M KCl solution are required to contain 2.55 g of KCl?

In the reaction between ammonia (NH_3) and phosphoric acid (H_3PO_4) to form ammonium phosphate ((NH_4)_3PO_4), how many moles of ammonia are required to react completely with 3 moles of phosphoric acid?

What volume of 1.0 M sodium phosphate solution is required to prepare 4.0 L of 0.80 M sodium phosphate solution?

How many atoms of sulfur are present in 4.30 grams of carbon disulfide (CS_2)?

What volume (in liters) of a 0.60 mol/L CaCO3 solution is required to contain 105 g of CaCO3? (Molar mass of CaCO3 = 100 g/mol)

When 25.5 grams of NaHCO3 decompose completely, what mass of CO2 is produced? (Molar masses: NaHCO3 = 84.0 g/mol, CO2 = 44.0 g/mol)

In terms of stoichiometry, what is the coefficient of O_2 in the balanced chemical equation for the combustion of C_2H_6?

Given that air is approximately 21% oxygen by mole, how many moles of propane (C_3H_8) are needed to completely react with the oxygen present in 24.0 moles of air?

What mass of Ca(OH)_2 is required to react completely with a 25.00 mL sample of 0.1234 M HCl(aq)?

If 5.0 moles of C_3H_8 react completely with oxygen, how many molecules of H_2O are formed?

What volume in mL of a 0.3000 M NaCl solution is required to provide 0.1500 moles of NaCl?

In the reaction 2 H_2 + O_2 → 2 H_2O, how many moles of O_2 are required to completely react with 27.4 mol of H_2?