What is the identity of the gas that is most likely to be inside balloon #2 if the options are H2, He, CO2, and N2?
Flashcard 3

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Mathematics
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6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
CO2
2.
FLASHCARD QUESTION
Front
What is the formula to calculate the number of moles of a gas in a rigid container given pressure, volume, and temperature?
Back
n = PV / RT, where n = moles, P = pressure, V = volume, R = ideal gas constant, T = temperature in Kelvin.
3.
FLASHCARD QUESTION
Front
What happens to the average speed of gas molecules when the temperature increases?
Back
The average speed of gas molecules increases with an increase in temperature.
4.
FLASHCARD QUESTION
Front
What is the relationship between pressure and volume in a gas when temperature is held constant?
Back
According to Boyle's Law, pressure and volume are inversely related (P1V1 = P2V2).
5.
FLASHCARD QUESTION
Front
What is STP in terms of temperature and pressure?
Back
STP stands for Standard Temperature and Pressure, which is 273 K (0°C) and 1 atm.
6.
FLASHCARD QUESTION
Front
How do you calculate the mass of a gas sample at STP?
Back
Mass = (Number of moles) x (Molar mass of the gas).
7.
FLASHCARD QUESTION
Front
What is the average kinetic energy of gas molecules related to?
Back
The average kinetic energy of gas molecules is directly proportional to the temperature of the gas.
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