Question

How many moles of Cr are in 156 g of the element?
a. 1.0 mol
b. 3.0 mol
c. 6.5 mol
d. 156 mol

Answer 1

You are given the number of grams of Chromium which is 156 grams. The molar mass of chromium is 52 grams per mole. Divide 156 grams to 52 grams per mole of Chromium and you will get 3 moles of Chromium. The answer is letter B.