Law of Pressure

Question 1

irish scientist who pioneered the study of the relationship between the volume and the pressure of trapped gas

Answer 1

robert boyle (1627-1691)

Question 2

the units of measurement used in Boyle’s experiment

Answer 2

cubic inches (in^3, volume), inches of mercury (inHg, pressure)

Question 3

what happens to the volume of the trapped gas when the pressure increases?

Answer 3

it decreases

Question 4

what happens to the volume when the pressure is doubled?

Answer 4

it reduced to half of its original value

Question 5

works on the principle that warm air is less dense than cooler air

Answer 5

hot air balloon

Question 6

states that for a given mass of gas, at constant temperature, the volume of the gas varies inversely with pressure

Answer 6

boyle’s law

Question 7

when the pressure or volume is changed, the new value of the other variable can be determined for as long as?

Answer 7

neither the temperature or the amount of gas is changed

Question 8

the equation of boyle’s law to consider two systems with the same amount of gas and temperature

Answer 8

p1 v1 = p2 v2

Question 9

another way of writing boyle’s law that means that the new gas volume (v2), can be calculated by multiplying the original volume (v1) by the ratio of the original pressure (p1) with the new pressure (p2)

Answer 9

(p1 x v1) / p2 = v2

Question 10

a balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa?

Answer 10

1.24 x 10^2 L

Question 11

a sample of neon gas occupies a volume of 677 ml at 134 kPa. What is the pressure of the sample if the volume is decreased to 642 ml?

Answer 11

141 kPa

Question 12

he studied the relationship of a gas’s volume and temperature; he showed that the volume of a gas at constant pressure, increases when temperature increases

Answer 12

Jacques Charles (1746-1823)

Question 13

all of the lines converge to _ volume at the same temperature, approximately, -273 degrees celcius.

Answer 13

zero

Question 14

the lowest possible temperature at which a gas can go because a negative volume is physically impossible

Answer 14

-273 degrees celcius

Question 15

in a kelvin scale, states that matter cannot be cooled further to temperatures below -273 degrees celcius.

Answer 15

absolute zero

Question 16

states that the volume of a fixed mass of gas is directly proportional to its kelvin temperature if the pressure is kept constant

Answer 16

charles’ law

Question 17

in charles law, what happens to volume when the temperature of a gas doubles?

Answer 17

it also doubles

Question 18

the standard equation of charles law

Answer 18

v1/t1 = v2/t2 or v1 x t2 = v2 x t1

Question 19

a balloon inflated in a room at 24 degrees celcius has a volume of 4.00 L. The balloon is then heated to a temperature of 58.0 degrees celcius. what is the new volume if the pressure remains constant?

Answer 19

4.46 L

Question 20

french scientist, physicist, and chemist who carried on Charles’ work on gases and eventually made a connection between pressure and temperature of gases when the volume and amount of gases are held constant

Answer 20

Joseph Louis Gay-Lussac (1778-1850)

Question 21

also known as lord Kelvin who used gay-Lussac’s measurements to determine the value of absolute zero

Answer 21

William Thomson (1824-1907)

Question 22

what happens to the pressure when the temperature of gas increases assuming that the amount of gas and volume are held constant?

Answer 22

it also increases

Question 23

the standard equation for gay-lussac’s law

Answer 23

p1 x t2 = p2 x t1

Question 24

the gas in a used aerosol can is at a pressure of 103 kPa at 25 degrees celcius. if the can is thrown onto a fire, what will the pressure be when the temperature reaches 928 degrees celcsius?

Answer 24

4.15 x 10^2 kPa

Question 25

a single expression that combines boyle’s law, charles’s law, and gay-lussac’s law

Answer 25

combine gas law

Question 26

standard equation of combined gas law

Answer 26

(p1 x v1) / t1 = (p2 x v2) / t2

Question 27

standard temperature

Answer 27

273 K

Question 28

standard pressure

Answer 28

101.3 kPa

Question 29

in a combined gas law, what happens to the volume when there’s a decrease in pressure and temperature?

Answer 29

it increases