Heat Vocab
Is going from a liquid to a gas releasing heat or absorbing heat?
absorbing
What are the conditions for an ideal gas
High temperature, low pressure
What is 50K in Celsius?
-223
What is the heat of fusion for water?
334
Which of the following have the lowest kinetic energy?
A. 25ml at 95C
B. 45mL at 75C
C 75mL at 75C
D. 95mL at 25C
D
What phase of matter has the lease entropy?
solid
Which of the following are true according to the kinetic molecular theory>
A. Separated by very small distances
B. Have strong intermolecular forces
C. In non-random, wavy motion
D. Volume is negligible
D
What amount of heat is required to completely vaporize 63.5grams of water at 100C?
143510
A sample of gas has a volume of 50ml at 54kpa. What will be the new volume of the gas if the pressure is increased to 80 kpa, temperature remaining constant.
33.75
If the pool outside is 546K and someone jumps in at 310K, what is the direction of the heat flow?
from the pool to the person
What happens at the plateau on a heating curve in terms of kinetic AND potential energy?
Kinetic energy stays the same, potential energy increases
According to table H, which liquid has the strongest intermolecular forces?
ethanoic acid
Convert 579 K to Celsius
306
A sample of helium gas has a volume of 600 milliliters at and a temperature at 298K. What is the new volume when the temperature is increased to 398K?
801.34
The freezing point of bromine is
A. 539C
B -539C
C 7C
D. -7C
-7C
As liquid at 100C changes to gas at 100C, what happens to the average kinetic energy of the ice molecules
remains the same
Which of the following contain the same number of particles as 4.5L of H2
A. 3.4L H2
B. 4.5L of N2
C. 6.3L of P2
D. 2.1L Cl2
B
When 150grams of water heats from 21C to 46C, what is the total amount of heat absorbed by the water
15675
A 140mL sample of helium gas is in a cylinder with a moveable piston at 109kPa and 287K. The piston is pushed in until the sample has a volume of 92mL and new temperature of 320K. What is the new pressure?
184.9
Heating Curve question 1
AB / CD
What is it called when a gas goes directly to a solid?
deposition
What is the vapor pressure of propanone at 65C
134ish
132-136
The temperature of 24 grams of water is increased by 6 degrees Celsius. How much heat was absorbed?
601.92
A sample of a gas has a volume of 65mL, pressure of 2.6atm and temperature of 101K. What is the final volume when the conditions are at STP?
456.8
Heating Curve Question 2
53