Multiple ChoiceIn 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?20views
Multiple ChoiceWhat volume of 1.0 M sodium phosphate solution is required to prepare 4.0 L of 0.80 M sodium phosphate solution?15views
Multiple ChoiceWhat 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)13views
Multiple ChoiceWhen 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)31views
Multiple ChoiceIn terms of stoichiometry, what is the coefficient of O_2 in the balanced chemical equation for the combustion of C_2H_6?12views
Multiple ChoiceGiven 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?14views
Multiple ChoiceWhat mass of Ca(OH)_2 is required to react completely with a 25.00 mL sample of 0.1234 M HCl(aq)?16views
Multiple ChoiceIf 5.0 moles of C_3H_8 react completely with oxygen, how many molecules of H_2O are formed?16views
Multiple ChoiceWhat volume in mL of a 0.3000 M NaCl solution is required to provide 0.1500 moles of NaCl?13views
Multiple ChoiceIn 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?16views
Multiple ChoiceWhen 3 moles of hydrogen gas (H_2) react completely with 3 moles of oxygen gas (O_2) according to the equation 2H_2 + O_2 → 2H_2O, how many grams of water (H_2O) are produced?12views
Multiple ChoiceWhen 0.100 moles of bromine (Br_2) react with excess hydrogen gas (H_2) according to the equation Br_2 + H_2 → 2 HBr, how many grams of HBr will be produced?15views