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April 20, 2014

Homework Help: chemistry

Posted by danni on Saturday, August 11, 2007 at 12:18am.

determine the number of grams of NH3 produced by the reaction of 3.5g of hydrogen gas.

1. Write the equation and balance it.
N2 + 3H2 ==> 2NH3

2. Convert 3.5 g H2 gas to mols.
mols = grams/molar mass.

3. Convert mols H2 gas to mols NH3 using the equation from step 1.

4. Convert mols NH3 to grams NH3.
grams = mols NH3 x molar mass NH3.

Post your work if you get stuck.

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