1 Charles' Law
Which variable is held constant when testing for the thermal expansion relationship of a gas?
Pressure
Is this temperature conversion correct? °C = K - 273
No
125 K = ?°C
-148°C
What is the average kinetic energy of any substance at 0 K?
0 J
Each degree on the Kelvin scale equals:
1°C
63°C = ? K
336 K
A balloon of helium was put in the freezer at -23°C. Its volume at this temperature was 2.5 liters. It was removed from the freezer. Eventually, it reached a temperature of 177°C. What would its volume be at this temperature? (Neglect any force used to stretch the rubber balloon.)
4.5 L
The volume of a gas is 605 liters at 27.0°C. The new temperature is -3.0°C. What is the new volume? (Remember to convert temperatures to the Kelvin scale.)
545 L
283°C =? K
556 K
According to the Kinetic Molecular Theory, the absolute temperature of a gas is directly related to average molecular kinetic____________.
Energy
Researchers have now been able to cool substances to absolute zero.
False
The freezing temperature of water is zero on both the "K" and "C" scales.
False
A gas occupies 210 mL at -73°C. To have the same gas occupy 360 mL, should the temperature be increased or decreased?
Increased
The temperature scale that starts with absolute zero is the ____ scale.
Kelvin
Absolute zero is ______. The lowest possible volume occupied by a gas The lowest possible temperature of a gas The lowest possible pressure exerted by a gas None of the above
The lowest possible temperature of a gas
The scientific study of the behavior near 0 K is called cryogenics.
True
The correct form(s) of the formula for Charles's Law is (are):
V/T = K t1/t2 = v1/v2
According to Charles's Law, which two variables are directly proportional?
Volume and temperature
Is the following statement correct about Charles's Law: The volume of a gas varies directly with the absolute temperature under the conditions of constant pressure.
Yes
The temperature-volume relationship in the graph for Charles' law in the lesson represents:
a direct linear function
