Question

One liter of gas is measured out at 37 °C at a constant pressure. What volume will it occupy at -25°C?
A. 1200 mL
B. 1800 mL
C. 800 mL
D. 833 mL

Answer 1

The volume that 1L of gas will occupy at 37°C and a constant pressure is 0.8L. Details about volume can be found below.

How to calculate volume?

The volume of a gas can be calculated using the Charles law equation as follows:

V1/T1 = V2/T2

Where;

• V1 = initial volume
• V2 = final volume
• T1 = initial temperature = 37°C + 273 = 310K
• T2 = final temperature = -25°C + 273 = 248K

1/310 = V2/248

248 = 310V2

V2 = 248 ÷ 310

V2 = 0.8L

Therefore, the volume that 1L of gas will occupy at 37°C and a constant pressure is 0.8L.

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