Multiple ChoiceWhat is the concentration of H^+ ions in a 0.010 M aqueous solution of sulfuric acid (H_2SO_4), assuming complete dissociation?120views
Multiple ChoiceWhat is the mass in grams of 0.250 mol of the common antacid calcium carbonate (CaCO_3)?77views
Multiple ChoiceWhich of the following steps is necessary to convert the mass of a sample of NaCl to the number of NaCl formula units present?49views
Multiple ChoiceWhich of the following is the correct molar mass (to two decimal places) of CH3OCH3 (dimethyl ether)?72views
Multiple ChoiceWhat is the mass (in grams) of 10.00 L of propane vapor (C3H8) at standard temperature and pressure (STP)?74views
Multiple ChoiceIf you have 644 grams of retinol (C20H30O), how many moles of retinol do you have?66views
Multiple ChoiceA 42.7 gram sample of potassium nitrate (KNO_3) contains how many grams of potassium?56views
Multiple ChoiceWhat is the mass, in grams, of 202 atoms of iron (Fe)? (1 mol of Fe has a mass of 55.85 g; Avogadro's number is 6.022 × 10^{23} atoms/mol.)93views