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user100 [1]
3 years ago
7

A 250. mL sample of gas at 1.00 atm and 20.0°C has the temperature increased to 40.0°C and the volume increased to 500. mL. What

is the new pressure?
a. 0.374 atm
b. 0.534 atm
c. 2.14 atm
d. 1.87 atm
e. 0.468 atm
Physics
1 answer:
Nata [24]3 years ago
4 0

Answer : The new pressure is, 0.534 atm

Solution :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 1.00 atm

P_2 = final pressure of gas = ?

V_1 = initial volume of gas = 250 ml

V_2 = final volume of gas = 500 ml

T_1 = initial temperature of gas = 20^oC=273+20=293K

T_2 = final temperature of gas = 40^oC=273+40=313K

Now put all the given values in the above equation, we get the final pressure of gas.

\frac{1atm\times 250ml}{293K}=\frac{P_2\times 500ml}{313K}

P_2=0.534atm

Therefore, the new pressure is, 0.534 atm

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