Multiple ChoiceIf you weigh out 0.205 g of salicylic acid (C7H6O3), what is the number of moles of salicylic acid present? (Molar mass of C7H6O3 = 138.12 g/mol)39views
Multiple ChoiceWhat is the mass in grams of 1.00 \times 10^6 sodium atoms? (Atomic mass of Na = 22.99 g/mol)35views
Multiple ChoiceGiven that the molar mass of H_2O is 18.02 g/mol, how many grams of H_2O are present in 0.20 mol?25views
Multiple ChoiceHow many carbon atoms are present in 15.0 grams of graphite (pure carbon)? (Atomic mass of carbon = 12.01 g/mol)25views
Multiple ChoiceGiven a graph showing the rates of effusion for four different gases—He, N2, O2, and CO2—which gas has the smallest molar mass?20views
Multiple ChoiceHow many grams are present in 0.885 moles of manganese (Mn)? (Atomic mass of Mn = 54.94 g/mol)35views