Answer:
363 grams
Explanation:
The molecular formula is K2S (i can't write lower-cased number)
The atomic mass for S is 32 g/mol and K is 39 g/mol
So, the mass for K2S is 39 x 2 + 32 = 110 g/mol
In 3.3 mol of potassium sulfide, there will be 110 x 3.3 = 363 (grams)
Hope this helps
