the gas. T F 11 As the sizes of molecules increase, the strengths of their Londo
ID: 860831 • Letter: T
Question
the gas. T F 11 As the sizes of molecules increase, the strengths of their London forces also increase T F 12. As the prevailing atmospheric pressure increases, the boiling point of a liquid decreases. T F 13. According to Charles' Law, if the pressure remains constant, the volume of a gas doubles when the gas is heated from 100 C to 200 C. T F 14. The solubility of oxygen gas in water increases at higher temperatures. T F 15. The solubility of oxygen gas in water increases as the partial pressure of oxygen over water increases. T F 16. The freezing point of a liquid and its boiling point have the same value at the substance s triple point. B. Multiple Choice Mark the best response to each question. 17. An atom of 188 Au has protons neutrons, and electrons 79 D. 109, 188, 109 A. 79, 79, 188 E. 79, 188, 79 B. 79, 109, 79 C. 188, 188, 79 18. The correct formula for tin (IV) sulfide is: E. Sn(SOA 2. D. SnS2 C. SnAS B. SnSO4 A. SnSExplanation / Answer
11). true,,Larger and heavier atoms and molecules exhibit stronger dispersion forces
12). false,, It increases the boiling point. You can think of it in a simple way that the pressure of the air opposes the pressure of the water that is trying to vaporize.
13). true,, V1/T1 = V2/T2
14). true , solubility is directly proportional to temperature
15). true, as pressure increases
16). true, because at triple point all forms co-exist
17). B, 79 electrons, 79 protons, 188-79=109 neutrons
18) . D , SnS2
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