According to Boyle's Law, the pressure of a gas increases as the volume decreases because
the gas particles get bigger.
the kinetic energy of the gas particles increases.
the gas particles strike the walls of the container with more force.
the temperature
the gas particles strike the walls of the container more often.
Zn(s) + 2 HCl(aq) ? H2(g) + ZnCl2(aq)
When 25.0 g of Zn reacts, how many L of H2 gas are formed at 25 �C and a pressure of 854 mmHg?
22.4 L
8.56 L
0.382 L
8.32 L
0.120 L
8.32 L
The volume of a sample of gas, initially at 25 �C and 158 mL, increases to 450. mL. What is the final temperature of the sample of gas, if the pressure in the container is kept constant?
71 �C
105 �C
-168 �C
8.8 �C
576 �C
576 �C
A balloon is filled with helium gas. For the question(s) that follow, select the letter of the balloon diagram that corresponds to the given change in conditions.
a= smaller
b= same size
c= larger
The temperature is changed from 50 �C to -150 �C at consta
A
What is the mass of a sample of O2 gas, which has a pressure of 740. mmHg, at a temperature of 25 �C, in a volume of 250. mL?
201 g
3.82 g
320. g
0.318 g
292 g
0.318 g
The pressure exerted by a gas on its container is directly proportional to
the number of moles of gas in the sample.
the centigrade temperature of the gas.
the volume of the container.
the mass of the individual gas molecules.
the Fahrenheit temperature o
the number of moles of gas in the sample.
What is the mass of neon that exerts a pressure of 720. mmHg, with a temperature of -15.0 �C, when the volume of the container is 760. mL?
0.0340 g
0.615 g
25.8 g
0.686 g
517 g
0.686 g
The relationship V1/n1=V2/n2 is called ________.
Boyle's Law
Charles's Law
Gay-Lussac's Law
The Combined Gas Law
Avogadro's Law
Avogadro's Law
A gas sample in a closed, expandable container of initial volume 5.00 L was allowed to warm from 25 �C to 35 �C, at constant moles and pressure. What was its new volume?
7.00 L
5.17 L
3.57 L
4.84 L
4380 L
5.17 L
At STP, how many moles of helium gas would occupy 1.00 L?
0.446 moles
22.4 moles
2.24 moles
224 moles
0.0446 moles
0.0446 moles
Which of the following is NOT a potential use for a hyperbaric chamber?
increasing the rate at which a broken bone heals
counteracting carbon monoxide poisoning
treating some cancers
treating a diver with the bends
treatment for burns and infections
increasing the rate at which a broken bone heals
What is the pressure, in mmHg, of a 3.60 g sample of O2 gas, which has a temperature of 35.0 �C, and a volume of 2800 mL?
772 mmHg
1.02 mmHg
7720 mmHg
77.2 mmHg
0.772 mmHg
772 mmHg
At STP, what is the mass of 11.2 liters of F2 gas?
152 g
76.0 g
38.0 g
9.50 g
19.0 g
19.0 g
Carbon dioxide and water vapor together account for about 5% of the air we breathe.
True
False
False