AccelePrep for the ACT Test 2nd Edition Student Text

C HAPTER 12 | T RY I T O UT ! S CIENCE P RACTICE • 233

25. According to the information provided and ‹‰—”‡ ͳǡ ™ƒ–‡” „‡…‘‡• ƒ •—’‡”…”‹–‹…ƒŽ ϐŽ—‹† ™Š‡ –Š‡ –‡’‡”ƒ–—”‡ ƒ† ’”‡••—”‡ ‡š…‡‡†ǣ A. 0.006 q C and 0.01 atm. B. 0.01 q C and 0.006 atm. C. 218 q C and 374 atm. D. 374 q C and 218 atm. 26. At 100 q C, as pressure is decreased from 1.5 atm –‘ ͲǤͲͲ͸ ƒ–ǡ ™Š‹…Š ‘ˆ –Š‡ ˆ‘ŽŽ‘™‹‰ ‹• –”—‡ǫ Ǥ ƒ”„‘ †‹‘š‹†‡…Šƒ‰‡• ˆ”‘ ƒ ‰ƒ• –‘ ƒ liquid. Ǥ ƒ”„‘ †‹‘š‹†‡…Šƒ‰‡• ˆ”‘ ƒ Ž‹“—‹† –‘ ƒ gas. H. Water changes from a liquid to a gas. J. Water changes from a gas to a liquid. 27. Based on the information provided and the phase diagram for water, it can be inferred that –Š‡ –”‹’Ž‡ ’‘‹– ‘ˆ…ƒ”„‘ †‹‘š‹†‡ ‘……—”• ƒ–ǣ Ǥ Ϋ͹ͺǤͷι ƒ† ͳ ƒ–Ǥ Ǥ Ϋͷ͸ǤͶι ƒ† ͷǤͳͳ ƒ–Ǥ Ǥ ͲǤͲͳι ƒ† ͲǤͲͲ͸ ƒ–Ǥ Ǥ ͵ͳǤͳι ƒ† ͹͵ ƒ–Ǥ 28. According to the information provided, both ™ƒ–‡” ƒ†…ƒ”„‘ †‹‘š‹†‡ ‡š‹•– •‘Ž‡Ž› ƒ• Ž‹“—‹†• at which of the following combinations of ’”‡••—”‡ ƒ† –‡’‡”ƒ–—”‡ǫ F. 10 q C and 56 atm G. 0 q C and 1 atm H. 30 q C and 10 atm J. There is no point at which both water and …ƒ”„‘ †‹‘š‹†‡ ‡š‹•– •‘Ž‡Ž› ƒ• Ž‹“—‹†•Ǥ

29. In Figure 1, the line indicating equilibrium between solid water (ice) and liquid water has a negative slope. This indicates that to maintain equilibrium between the two states: A. Ę the temperature is decreased, the pressure must be decreased. B. as the temperature is increased, the pressure must be decreased. C. as the temperature is increased, the pressure must remain constant. D. as the temperature is increased, the pressure must be increased, then decreased. 30. Sublimation occurs when a solid changes to a gas without going through a liquid phase. Under which of the following conditions can •—„Ž‹ƒ–‹‘ ‘……—”ǫ F. Water at 0 q C and 0.80 atm G. Water at 80 q C and 0.006 atm Ǥ ƒ”„‘ †‹‘š‹†‡ ƒ– 78.5 q C and 1 atm Ǥ ƒ”„‘ †‹‘š‹†‡ ƒ– Ͳ q C and 5.11 atm