How many potassium hydroxide (koh) formula units are present in 6.89 mol of koh?
a. 4.1498 × 1024
b. 4.1498 × 1023
c. 8.299 × 1024
d. 8.299 × 1023

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.