Hey there!
Al₂S₃
Find the molar mass.
Al: 2 x 26.98 = 53.96
S: 3 x 32.065 = 96.195
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150.155 grams
One mole of Al₂S₃ has a mass of 150.155 grams.
We have 5.22 moles.
150.155 x 5.22 = 784
5.22 moles of Al₂S₃ has a mass of 784 grams.
Hope this helps!
