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How much water forms when 8 g of methane burns completely (CH4 + 2O2 gives CO2 + 2H2O)?
A18 g
B36 g
C9 g
D4.5 g
Answer & Solution
Correct answer: A. 18 g
8 g of methane is 0.5 mol, which gives 2 x 0.5 = 1 mol of water, that is 18 g.
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