In the equation N2 + 2 O2 → 2 NO2, 14 g of nitrogen can produce how many grams of nitrogen dioxide?
2 answers
30
mols N2 = grams/molar mass = 14/28 = 0.5
Using the coefficients in the balanced equation, convert mols N2 to mols NO2.
That's 0.5 mol N2 x (2 mols NO2/1 mol N2) = 0.5 x 2/1 = 1 mol NO2
Now convert mols NO2 to grams. g = mols x molar mass = 1 mol x 46 = 46 grams NO2
Using the coefficients in the balanced equation, convert mols N2 to mols NO2.
That's 0.5 mol N2 x (2 mols NO2/1 mol N2) = 0.5 x 2/1 = 1 mol NO2
Now convert mols NO2 to grams. g = mols x molar mass = 1 mol x 46 = 46 grams NO2
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