PHYSICS MIDDLE SCHOOL

A mass of gas under constant pressure occupies a volume of 0.5 m3 at a temperature of 20 degree Celsius. Using the formula for cubic expansion, what will be the volume at a temperature of 45 degree Celsius without a change in pressure?A) 0.5228938 m3
B) 0.0228938 m3
C) 0.5457875 m3
D) 0.0457875 m3

Answers

Answer 1
Answer:

Answer: C) 0.5457875 m^3

Explanation: Charles' Law: This law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles.

V\propto T    (At constant pressure and number of moles)

(V_1)/(T_1)=(V_2)/(T_2)

where,

V_1 = initial volume of gas = 0.5m^3

T_1 = initial temperature of gas =20^oC=273.15+20=293.15K

V_2 = final volume of gas = 0?

T_2 = final temperature of gas = 45^oC=273.15+45=318.15K

(0.5)/(293.15)=(V_2)/(318.15)

V_2=0.5457875m^3

Thus the final volume is 0.5457875m^3
Answer 2
Answer: the answer is C 0.5457875

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