1.solve this problem using the appropriate law. (remember that )
what is the pressure of 1.9 mols of nitrogen gas in a 9.45 l tank and at a temperature of 228 k?
3.76 atm-answer
2.
calculate the amount of heat required or released. you will need to use your periodic table, table b-3, table b-4, and table b-5 in your chemistry reference guide.
how much heat is required to change 100 g of ice (h2o) at 253 k to vapor (steam) at 393 k?
309 kj-answer
3.
calculate the amount of heat required or released. you will need to use your periodic table, table b-3, table b-4, and table b-5 in your crg.
lead melts at 328 ℃. how much heat is required when 23.0 g of solid lead at 297 k condenses to a liquid at 702 k?
0.58 kj-answer
4.the amount of heat energy required to change one mole of a liquid to a gas at its boiling point and at a constant pressure is
molar enthalpy of vaporization-answer
5.
changing from a liquid to a solid is
solidification-answer
6.
during heating, once the temperature of a substance reaches the boiling point, the temperature will not rise again until additional heat called the has been added.
specific heat-answer
7.
what is the volume of 7.25 g of oxygen gas at stp?
5.08 l-answer
8.the temperature and pressure at which a substance can exist in equilibrium between its solid, liquid, and gaseous states is called its
triple point-answer
9.
which is not a postulate of the kinetic-molecular theory of matter? (read carefully! )
these particles are in constant motion, which is rapid and random.-answer
10.
solve this problem using the appropriate law. use table b-6 from the crg.
hydrogen gas was collected by water displacement. what was pressure of the h2 collected if the temperature was 24°c?
97 kpa-answer
11.
a liquid changes state to a gas at or above its boiling point by
vaporization-answer
12.
solve this problem using the appropriate law.
what is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 l tank and at a temperature of 301 k? (r=0.0821 l·atm/mol·k)
4.94 atm-answer
13.
is a change of state from a gas to a solid without first becoming a liquid.
deposition-answer
14.
solve this problem using the appropriate law.
before it was launched, a helium-filled balloon had a pressure of 101 kpa at a temperature of 20°c. at an altitude of 15 000 m, the pressure had decreased to 11.7 kpa and the temperature had dropped to -56 °c. the volume of the balloon increased to 35. 4 m3.
what is the original volume of the balloon?
43.0 m3-answer
15.
solve this problem using the appropriate law. (use table b-6 from the crg.)
nitrogen gas was collected by water displacement. what was the pressure of the n2 collected if the temperature was 50 ℃?
87.7 kpa-answer
16.
the term is used for a substance whose particles are arranged in a random manner.
amorphous solid-answer
17.
changing from a vapor or a gas to a liquid is
condensation-answer
18.
is a change of state from a solid to a gas without first becoming a liquid.
sublimation-answer
19.
the ability of a substance to flow
fluidity-answer
20.
calculate the amount of heat required or released. you will need to use your periodic table, table b-3, table b-4, and table b-5 in your chemistry reference guide.
mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k?
-25.8 kj-answer
21.
solve this problem using the appropriate law.
before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3.
what is the original volume of the balloon?
13 m3-anwer
22.
a liquid changes its state to a gas at temperatures and pressures below the boiling point by
vaporization-answer
23.
is the term used for an element that can exhibit more than one structural form in the same state-solid, liquid, or gas.
allotropic-answer
unit cell
24.
calculate the amount of heat required or released. you will need to use your periodic table, table b-3, table b-4, and table b-5 in your crg.
how much heat is lost when changing 65 g of water vapor (h2o) at 421 k to ice at 139 k?
-219.4 kj-answer
25.
solve this problem using the appropriate law.
what is the volume of 84 g of bromine gas (br2) at stp?
11.77l-answer