Multiple ChoiceWhich molecular formula is correctly paired with its corresponding empirical formula?19views
Multiple ChoiceWhich statement best describes the difference between an empirical formula and a molecular formula?25views
Multiple ChoiceA compound contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen by mass. What is the empirical formula ratio of carbon to hydrogen to oxygen in this compound?21views
Multiple ChoiceWhich of the following statements about empirical and molecular formulas is correct?27views
Multiple ChoiceWhat is the empirical formula of a compound that contains 49.4% K, 20.3% S, and 30.3% O by mass?26views
Multiple ChoiceA compound is found to be 30.45% nitrogen (N) and 69.55% oxygen (O) by mass. If 1.63 g of this compound occupy 389 mL at 0.00°C and 775 mm Hg, what is the empirical formula of the compound?289views
Multiple ChoiceHow many atoms of oxygen are present in the empirical formula of calcium phosphate?25views