Victory for the ACT Student Text 15e

302 • S CIENCE

Figure 2

28. •…‹‡–‹•– ϐ‹ŽŽ• ‘‡ ‡–ƒŽ…›Ž‹†‡” ™‹–Š helium gas and a second metal cylinder with chlorine gas. After the scientist Š‡ƒ–• „‘–Š ‰ƒ•‡• –‘ ͵ͲͲ ǡ ™Š‹…Š ‘ˆ –Š‡ following will be true? F. The molecules in both gases will have the same most probable speed. G. The helium molecules will have the higher most probable speed. H. The chlorine molecules will have the higher most probable speed. J. The chlorine molecules will have a broader range of speeds. 29. According to the information provided, which one of the following correctly lists, from least to greatest, the gases according –‘ ‘•– ’”‘„ƒ„Ž‡ ‘Ž‡…—Žƒ” •’‡‡† ƒ– ͵ͲͲ ǫ A. Hydrogen, helium, nitrogen, oxygen, chlorine, krypton Ǥ ”›’–‘ǡ…ŠŽ‘”‹‡ǡ ‹–”‘‰‡ǡ ‘š›‰‡ǡ hydrogen, helium Ǥ ”›’–‘ǡ…ŠŽ‘”‹‡ǡ ‘š›‰‡ǡ ‹–”‘‰‡ǡ hydrogen, helium Ǥ ”›’–‘ǡ…ŠŽ‘”‹‡ǡ ‘š›‰‡ǡ ‹–”‘‰‡ǡ helium, hydrogen

30. Based on the information provided, it is inferable that as the temperature of a gas increases: F. The molecular weight of the gas increases. G. the relative number of particles at the most probable speed decreases. H. the total number of particles in the gas decreases. J. the most probable molecular speed decreases.