Name: _____________________________________
Chapter 10 Study guide
Date:___________
Write the answers to each of the following questions. Be alert to the fact that the answers
have specific units, that is number of atoms or molecules, moles, or grams.
1. The number of grams in 0.035 mole of carbon dioxide
2. The number of moles of carbon atoms in 0.035 mole of carbon dioxide
3. The number of moles of oxygen atoms in 0.035 mole of carbon dioxide
4. The number of carbon atoms in 0.035 mole of carbon dioxide
5. The number of oxygen atoms in 0.035 mole of carbon dioxide
6. The number of moles of carbon dioxide in 4.4 x 10-2 grams of carbon dioxide
7. The number of carbon atoms in one molecule of carbon dioxide
8. The number of oxygen atoms in ten molecules of carbon dioxide
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9. The mass in grams of one molecule of carbon dioxide
10. The number of moles of carbon dioxide in 0.440 grams of carbon dioxide
11. The number of molecules of carbon dioxide in 4.4 gramsof carbon dioxide
12. The number of carbon atoms in 4.4 grams of carbon dioxide
13. The number of oxygen atoms in 4.4 grams of carbon dioxide
14. The mass in grams of 2.01 x 1010 molecules of carbondioxide
15. The mass in grams of carbon dioxide which contains 1.204 x 1016 atoms of carbon
16. The mass in grams of carbon dioxide which contains 6.02 x 1020 atoms of oxygen
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1. Aspartame is an artificial sweetener that is 160 times sweeter than sucrose
(table sugar) when dissolved in water. It is marketed as Nutra-Sweet. The
molecular formula for aspartame is C14H18N2O5.
a) Calculate the molar mass of aspartame.
b) How many moles of molecules are present in 10.0 mg of aspartame?
c) Calculate the mass in grams of 1.56 mol aspartame.
d) How many molecules area in 5.0 mg aspartame?
e) How many atoms of nitrogen are in 1.2 g aspartame?
f) What is the mass in grams of 1.0 x 109 molecules of aspartame?
g) What is the mass in grams of one molecule of aspartame?
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2. Dimethylnitrosamine, (CH3)2N2O is a carcinogenic (cancer causing) substance
that may be formed in foods, beverages or gastric juices from the reaction of
nitrite ion (used as a food preservative) with other substances.
a) What is the molar mass of dimethylnitrosamine?
b) How many moles of (CH3)2N2O molecules are present in 250 mg
dimethylnitrosamine?
c) What is the mass of 0.050 mole dimethylnitrosamine?
d) How many atoms of hydrogen are in 1.0 mole dimethylnitrosamine?
e) What is the mass of 1.0 x106 molecules of dimethylnitrosamine?
f) What is the mass in grams of one molecule of dimethylnitrosamine?
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