Question

1. choose the best answer. what is used to determine the percent composition of a compound? avogadros number density molar mass mole ratio 2) choose the best answer. a label reads “92% isopropyl rubbing alcohol.” isopropyl alcohol has a molar mass of 60.1 g/mol. what is the percent composition of this compound? 92% 70% 55% 60%

Explanation:

1. For question 1: Percent composition of a compound is calculated by dividing the total mass of each element in one mole of the compound by the molar mass of the compound, then multiplying by 100. So molar mass is required for this calculation.
2. For question 2: The label directly states the percent composition of isopropyl alcohol as 92%.

Answer:

1. molar mass
2. 92%