Question

5. Solve the following Gas Law Problems. Be sure to include which law applies in the solution.
a) A gas has a volume of 100 ml when the pressure is 735 mm. What volume will the gas occupy at 700 mm?


b) Change the following temperatures to Kelvin scale:
1) 20 C

2) 85 C

3) - 15 C

4) - 190 C


c) Given 90 ml of Hydrogen gas collected with the temperature is 27 degrees C. What volume will the Hydrogen occupy at 42 C?

d) A gas measures 500 ml at a temperature of -23 C. Find its volume at 23 C.


e) 1.

Answer 1

I think you'd have more luck with these type of questions in the "Chemistry" group.

Answer 2

assuming the gas is ideal, we can use the formula:
P1*V1 = P2*V2
where
P1 = initial pressure
V1 = initial volume
P2 = final pressure
V2 = final volume
substituting:
735 * 100 = 700 * (V2)
V2 = 105 mL
Source: http://www.jiskha.com/display.cgi?id=1301408886

Answer 3

Same principle formula used on C & D.
V1 = initial volume
T1 = initial temperature (units in Kelvin)
V2 = final volume
T2 = final temperature (units in Kelvin)
V1*T1 = V2*T2
V1 = 90ml
T1 = 300 K
V2 = x
T2 = 315 K
90*300 = V2 * 315 (90*300) / 315 = x

Answer 4

thanks!!!! do you think you can help with the other question i posted?

Answer 5

5 B) http://www.metric-conversions.org/temperature/celsius-to-kelvin.htm

D)
V1 = 500
T1 = 250
V2 = x
T2 = 296
500*250 = x*296
(500*250) / 296 = 422.3mL

Answer 6

I think A is a test of Boyle's Law whereas C and D are using Charles' Law