How many grams of water will be produced
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How many grams of water will be produced

[From: ] [author: ] [Date: 11-12-10] [Hit: ]
Please show work.# mol of H2 = 34.0g/2.02gmol-1 = 16.#mol of O2 = 23.8g/32.......
If 34.0 grams of H2 reacted with 23.8 grams of O2 in order to make water, how many grams of water would be produced? Please help! I dont understand how to do this. Please show work.

2H2 + O2 ---> 2H2O

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Calculate the number of moles of each reactant:

# mol of H2 = 34.0g/2.02gmol-1 = 16.83 mol

#mol of O2 = 23.8g/32.00gmol-1 = 0.744 mol

Therefore, you will run out of oxygen first (it is the limiting reagent)

In the equation, one mole of oxygen produces two moles of water. Therefore, 0.74 moles of oxygen will produce 1.488 moles of water.

The mass of 1.488 moles of water is: 1.488 mol x 18.02 g mol-1 = 26.8g
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