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Given the balanced equation:

2H 2(g) + O 2(g) ® 2H 2 O ( l )

How many grams of H 2 O are formed if 9.00 mol H 2(g) reacts completely with an

excess of O 2(g) ? The molar mass of H 2 O is 18.0g/mol.

(a) 18.0g (b) 36.0g (c) 81.0g (d) 162g

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