gas laws review

At constant temperature, 80 mL of gas at 2 atm is compressed to 8 atm. The new volume of the gas, in mL is equal to ____

• 160 mL

• 40 mL

• 320 mL

• 20 mL

At constant volume which graph shows the relationship between the pressure and temperature?

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A sample of H2(g) and a sample of N2(g) at STP contain the same number of molecules. Each sample must have

• the same volume, but a different mass

• the same mass, but a different volume

• both the same volume and the same mass

• neither the same volume nor the same mass

A gas sample is at 10 oC has the volume of 64 L . Later, the sample's volume was found to be 16 L, if could be because_______

• At constant temperature, the pressure decreased by 1/2.

• At constant temperature, the pressure decreased by 1/4.

• At constant pressure and temperature decreased to 170 K

• The temperature has decreased to 70.75 K at constant pressure.

Which statement correctly describes a sample of gas confined in a sealed container?

• It always has a definite volume, and it takes the shape of the container.

• It takes the shape and the volume of any container in which it is confined.

• It has a crystalline structure.

• It consists of particles arranged in a regular geometric pattern.

1.70 atm, a sample of gas takes up 4.25L. If the pressure in the gas is increased to 2.40 atm, what will the new volume be?

• 0.167 L

• 6.00 L

• 3.01 L

• 0.332 L

At the same temperature and pressure, which sample contains the same number of particles as 2 L of H2O (g)?

• 2 L H2O (l)

• 1 L N2 (g)

• 0.5 L SO2 (g)

• 2 L Ne (g)

Tags

NGSS.HS-PS1-7

Convert 1140 torr to atm. A atm = 101.3 kPa = 760 mm Hg = 760 torr

• 11.3 atm

• 0.649 atm

• 1.50 atm

• 7.50 atm

Two flasks containing different gases but are both at the same temperature and the same pressure. One flask contains 10.0 g of Ne and the other flask contains 8.0 g of He. Which of the following statements are correct?

• Both flasks contain the same number of atoms

• The volume of the flasks must be the same

• The flask containing helium has a higher volume than the flask that contains neon

• The kinetic energy for He is higher than kinetic energy of Ne.

Which has the most kinetic energy?

• solid NaCl crystal at 25 oC

• copper strpi at 25 oC

• water at 25 oC

• O2 gas at 25 oC