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Dominik [7]
3 years ago
13

How many grams of water are made from the reaction of 16.0 grams of oxygen gas?

Chemistry
1 answer:
laiz [17]3 years ago
4 0
Assuming hydrogen gas is in excess, calculate the moles of oxygen 

<span>n(O2) = 16.0 g / 32.0 g/mol = 0.500 mol </span>

<span>Calculate the moles of water using the mole ratio; the ratio of H2O to O2 is 2:1 or the moles of H2O is twice the moles of O2 </span>

<span>n(H2O) = 2 x n(O2) = (2)(0.500) = 1.00 mol </span>

<span>Calculate the mass of H2O by multiplying the moles by the molar mass of water </span>

<span>mass = (1.00 mol)(18.0 g/mol) = 18.0 g H2O </span>

<span>Ans: A)


</span>
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