Question

how many moles are there in 458 grams of Na2SO4?






















how many grams are there in 9.40 x 1025 molecules of H2?

Answer 1

Answer:

mr Na2SO4 = 23X2+32.1+16X4 = 142.1

Explanation:

142.1 represents one mol of Na2SO4

458 -------------- 1/142.1  x  458     =     3.223

approximately 3.22 mol