1.

X and Y are two elements which form X_(2)Y_(3 and X_(3)Y_(4). If 0.20 mol of X_(2)Y_(3) weighs 32.0g and 0.4mol of X_(3)Y_(4) weighs 92.8g, the atojic weights of X and are respectively:

Answer»

16.0 and 56.0
8.0 and 28.0
56.0 and 16.0
28.0 and 8.0

Answer :C


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