9. Given the following balanced chemical equation, 6NaOH + 3Cl 2 → NaClO 3 + 5NaCl + 3H 2 O how many moles of NaCl can be formed if 6 mol of NaOH were to react?
10. Balance the following unbalanced equation and determine how many moles of H 2 O are produced when 1.65 mol of NH 3 react. NH 3 + O 2 → N 2 + H 2 O
11. Explain how a chemical reaction balanced in terms of moles satisfies the law of conservation of matter.
12. How many grams of glucose (C 6 H 12 O 6 ) are produced if 17.3 mol of H 2 O are reacted according to this balanced chemical equation? 6CO 2 + 6H 2 O → C 6 H 12 O 6 + 6O 2
13. Nitroglycerin [C 3 H 5 (ONO 2 ) 3 ] is made by reacting nitric acid (HNO 3 ) with glycerol [C 3 H 5 (OH) 3 ] according to this reaction: C 3 H 5 (OH) 3 + 3HNO 3 → C 3 H 5 (ONO 2 ) 3 + 3H 2 O If 87.4 g of HNO 3 are reacted with excess glycerol, what mass of nitroglycerin can be made?
14. Precipitation reactions, in which a solid (called a precipitate) is a product, are commonly used to remove certain ions from solution. One such reaction is as follows: Ba(NO 3 ) 2 (aq) + Na 2 SO 4 (aq) → BaSO 4 (s) + 2NaNO 3 (aq) How many grams of Na 2 SO 4 are needed to precipitate all the barium ions produced by 43.9 g of Ba(NO 3 ) 2 ?
15. The SS Hindenburg contained about 5.33 × 10 5 g of H 2 gas when it burned at Lakehurst, New Jersey, in 1937. The chemical reaction is as follows: 2H 2 + O 2 → 2H 2 O How many grams of H 2 O were produced?
17. Hemoglobin (molar mass is approximately 64,000 g/ mol) is the major component of red blood cells that transports oxygen and carbon dioxide in the body. How many moles are in 0.034 g of hemoglobin?
18. Isooctane (C 8 H 18 ) is used as a standard for compari ng gasoline performance. Write a balanced chemical equation for the combustion of isooctane.
19. Heptane (C 7 H 16 ) is also used as a standard for determining gasoline performance. Write a balanced chemical equation for the combustion of heptane.
20. What is the difference between a combination reaction and a decomposition reaction?