Question 1

which of the following does not follow the kinetic molecular theory?

when hitting the walls of the container, the velocity of gas molecules decreases.

the average kinetic energy of gas molecules increases with increasing thermal energy (higher temperature).

gas molecules have negligible volume.

gas molecules possess no attraction to one another.
3 points

question 2

the average kinetic energy of 1 mole of a gas at 273 degrees celsius is:

6.81 x 103 j

3.40 x 103 j

1.51 x 103 j

6.72 x 101 j
3 points

question 3

the average kinetic energy of 1 mole of a gas at 102 degrees celsius is:

4.62 x 101 j

1.27 x 103 j

2.08 x 103 j

4.68 x 103 j
3 points

question 4

at the top of a mountain, the pressure is found to be 0.52 atmospheres. how does this compare to standard atmospheric pressure at sea level?

it is higher than standard atmospheric pressure at sea level.

it is the same as standard atmospheric pressure at sea level.

it is lower than standard atmospheric pressure at sea level.

this cannot be determined from the information given.
3 points

question 5

how man atmospheres are equivalent to 236.28 kilopascals of pressure?

4.2883 x 10-1 atm

2.3941 x 104 atm

2.3319 x 100 atm

2.3941 x 100 atm
3 points

question 6

the relationship between volume and temperature, when pressure and moles are held constant, is: v/t = k
we could say then, that:

if the temperature is doubled, the volume must be halved.

if the temperature is halved, the volume must double.

if the temperature is doubled, the volume must also double.

if the temperature is doubled, the volume must remain the same.
3 points

question 7

the relationship between pressure and volume, when moles and temperature of a gas are held constant, is: pv = k
we could say then, that:

if the volume of the gas is doubled, the pressure also doubles.

if the volume of a gas is halved, the pressure is doubled.

if the volume of gas is doubled, the pressure is unaffected.

if the volume of a gas is halved, the pressure is tripled.
3 points

question 8

in an industrial process, the temperature of a fixed amount of gas in a rigid container drops from 50 degrees celsius to 25 degrees celsius. what will be the final pressure in the container if the initial pressure is 3.6 atmospheres?

1.8 atm

3.3 atm

3.9 atm

7.2 atm
3 points

question 9

a balloon containing 0.10 moles of gas has a volume of 2.0 liters. if temperature and pressure remain constant, what will be the new volume when 0.30 moles of gas are added to the balloon?

0.50 l

1.0 l

4.0 l

6.0 l

3 points

question 10

which order arranges liquids from least to greatest viscosity?

o2, c3h8, h2o, c24h50

c24h50, c3h8, h2o, o2

o2, h2o, c3h8, c24h50

c3h8, h2o, c24h50, o2
3 points

question 11

if you can smell a cleaning solution from across the room, you are experiencing the result of which liquid property?

viscosity

surface tension

cleavage planes

volatility
3 points

question 12

which of the following crystals would be most brittle and hard?

ar

zns

i2

c12h22o11
3 points

question 13

which of the following crystals would be the softest?

p4

sio2

zns

cucl
3 points

question 14

a body-centered cubic has particles:
i. in the center of the cube.
ii. in the center of each face.
iii. at each corner of the cube.

i only

i and ii

i and iii

i, ii, and iii
3 points

question 15

a face-centered cubic has particles:
i. in the center of the cube.
ii. in the center of each face.
iii. at each corner of the cube.

ii only

i and ii

ii and iii

i, ii, and iii