Download Chemistry Worksheet on Mass Mol and Mol Mass

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Chemistry Worksheet on MassMol and MolMass Calculations
Assume all reactions go to completion. Write the formula equation, balance the equations, and
solve the problems. Show all work. Draw a rectangle around the answer and don’t forget the units.
One in a series of reactions that inflate air bags in automobiles is the decomposition of sodium
azide (NaN3) to produce solid sodium and nitrogen gas.
NaN3 →
Na
+
N2
1. Determine the number of mol of sodium produced if 34.51g of sodium azide reacts completely.
2. Calculate the number of mol of sodium azide needed to produce 32.56 g of nitrogen gas.
3. Calculate the number of mol of nitrogen gas produced if 546.71g of sodium azide reacts
completely.
In the formation of acid rain, sulfur dioxide reacts with oxygen and water in the air to form sulfuric
acid (H2SO4).
SO2 +
O2 +
H2O →
H2SO4
4. How many grams of oxygen are needed to produce 456.2 mol of sulfuric acid?
5. How many grams of sulfuric acid are produced if 23.456 mol of sulfur dioxide reacts
completely?
6. How many grams of sulfuric acid are produced if 0.790 mol of oxygen react?
7. How many grams of sulfur dioxide would react with 0.098 mol of oxygen gas in this reaction?