Complete the following calculations:

A. What is the mass of 3.21 moles of Na atoms?

B. How many moles are in 1.47 X 10⁹ grams of V?

C. What mass is contained in 4.1 X 10^-8 moles of H₂O?

D. 121 grams of LiBr F.U. has how many moles of LiBr?