Page 1296 - Chemistry--atom first
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1286 Answer Key
34. 0.5000 L
36. 1.9 mL
38. (a) 0.125 M; (b) 0.04888 M; (c) 0.206 M;
(e) 0.0056 M
40. 11.9 M
42. 1.6 L
44. (a) The dilution equation can be used, appropriately modified to accommodate mass-based concentration units:
This equation can be rearranged to isolate mass1 and the given quantities substituted into this equation. (b) 58.8 g
46. 114 g
48.1.75 10−3 M 50. 95 mg/dL 52.2.38 10−4 mol 54. 0.29 mol
Chapter 7
1. An equation is balanced when the same number of each element is represented on the reactant and product sides.
Equations must be balanced to accurately reflect the law of conservation of matter.
3. (a) (b)
(c) (d) (e) (f)
(g) (h)
5. (a) (b) (c) (d)
7. (a) Ba(NO3)2, KClO3; (b) (c)
(d)
9. (a) (b) complete ionic equation:
net ionic equation:
11. (a)
(b)
(c)
13. (a) oxidation-reduction (addition); (b) acid-base (neutralization); (c) oxidation-reduction (combustion)
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