88 MULTIPLE CHOICE Question 7 Which of the following represents the correct conversion factor to convert moles of a substance to grams? molar mass of the substance, in grams per mole B 6.02times 10^23 molecules per mole C atomic number of each element in the substance in amu per mole D 1 mole per 224 liters at STP

The correct answer is:

A. molar mass of the substance, in grams per mole

Explanation: The molar mass of a substance, expressed in grams per mole, is the correct conversion factor to convert moles of a substance to grams. This is because the molar mass represents the mass of one mole of the substance. By multiplying the number of moles by the molar mass, you can determine the total mass in grams.