Given the balanced equation:
2H2(g) + O2(g) ® 2H2O(l)
How many grams of H2O are formed if 9.00 mol H2(g) reacts completely with an
excess of O2(g)? The molar mass of H2O is 18.0g/mol.
(a) 18.0g (b) 36.0g (c) 81.0g (d) 162g
it is simple 18*9=162g since 9 mol H2 forms 9 mol H2O.
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