CHEM MULTIPLE CHOICE GAS LAWS
How does the atmospheric pressure at altitudes below sea level compare with atmospheric pressure at sea level?
the atmospheric pressure at altitudes below sea level is higher
What happens to the average speed of the particles in a sample of matter as the temperature of the sample is increased?
the average speed increases
Why does air escape from a tire when the tire valve is opened?
The pressure outside the tire is lower than the pressure inside the tire
Which of the following gases will difuse the fastest?
hydrogen
What does the ideal gas law allow a scientist to calculate that the other gas laws do not?
# of moles
The pressure of gas in a container is 152 mmHg this is equivalent to
.200atm
the temperature at which the motion of particles theoretically ceases is
0K
standard conditions when working with gases are defined as?
0°c and 1 atm
When do real gases no longer follow the ideal gas law?
Extreme pressure/Extreme cold
The volume of a gas is doubled while the temperature is held constant. How does the pressure change
It is reduced by one half
The volume of a 1.00 mol sample of an ideal gas will decrease when the?
Pressure increases and the temp decreases
What happens to the temperature of a gas when it is compressed?
The temperature will increase
Why does the pressure inside a container of gas increase if more gas is added to the container?
There is an increase in the number of collisions between particles and the walls of the container
What cause gas pressure in a container such as a helium balloon?
collisions of particles with each other and the walls
If the volume of a container of gas is reduced, what will happen to the pressure inside the container?
the pressure will increase
