(big points) if anybody sees this can they help me out?
P*V = n*R*T
P = pressure
V = volume
n = number of moles
R = the universal gas constant
T = temperature in degrees Kelvin
This equation is known as the ideal gas law, and it can be used to predict the behavior of many gases at relatively low pressure.
From this equation, you can see that as the temperature of a gas increases,
Question 1 options:
either the pressure of the gas, the volume of the gas, or both, will decrease.
either the pressure of the gas, the volume of the gas, or both, will increase.
the number of moles of gas will go down.
the pressure of the gas increases.
Question 3 (1 point)
In a process called electrolysis, an electric current passed through water causes hydrogen gas and oxygen gas to be evolved. The unbalanced reaction below shows this process:
If a 0.75 mol sample of water is electrolyzed until all the liquid water is gone, what volume of oxygen gas is produced at 100°C and 1 atm?
R = 0.08206 L * atm/mol * K
Question 3 options:
A) 11.5 L
B) 3.08 L
C) 114.8 L
D) 0.375 L
According to Dalton's Law of Partial Pressures, the pressure of oxygen in dry air would be
Question 4 options:
A) 2.12 kPa
B) 21.22 kPa
C) 21.00 kPa
D) 21 kPa
Question 5 (1 point)
Curious Carl's chemistry teacher handed him a sealed flask containing two gases, oxygen and hydrogen. The pressures of the two gases are 8.00 atm and 1.00 atm, respectively.
What is the total pressure of the combined gases?
Question 5 options:
A) 1.00 atm
B) 8.00 atm
C) 7.00 atm
D) 9.00 atm
Question 6 (1 point)
Ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen and hydrogen over an iron catalyst. The reaction is represented by this equation:
If the total pressure of nitrogen and hydrogen in the tank before the reaction is 4200 kPa, what is the partial pressure of the nitrogen gas? [Assume there would be no excess reagent if the reaction went to completion.]
Question 6 options:
A) 2100 kPa
B) 1400 kPa
C) 3150 kPa
D) 1050 kPa
Question 7 (1 point)
A compressed air tank carried by scuba divers has a volume of 8.00 L and a pressure of 141 atm at 22.0°C. What is the volume (in liters) of air in the tank at STP?
A) 993 L
B) 1224 L
C) 1280 L
D) 1044 L
Question 8 (1 point)
Piston changing volume
A 2.5 liter volume of carbon dioxide gas is held at constant temperature and at 100 kPa of pressure. Gradually the pressure is increased to 500 kPa. What is the new volume of carbon dioxide gas?
A) 12.5 liters
B) 5 liters
C) 0.5 liters
D) 4 liters
Question 9 (1 point)
At one atmosphere of pressure and 25°C, a hot air balloon has a volume of 4,000 liters. While still tied to the ground, the air in the balloon is heated to 68°C. When the balloon is untied, ready to float away, it has a new volume of
Question 9 options:
A) 4577 liters
B) 9280 liters
C) 3496 liters
D) 1088 liters