Question

If a 50 cm cube sample of gas exerts a pressure of 60.0 kPa at 35 degree celcius, what volume will it occupy at STP? ​

Answer 1

Explanation:

Use Charles Law. Temperature and Volume are directly related using degrees Kelvin. ( if the pressure and number of molecules are kept constant.

V1T1=V2T2

V1=37.5l

T1=35+273=308 degrees K

V2=3.0l

# T_2 = unknown

Substituting these numbers into the equation gives

37.5308=3.0T2 multiplying across gives

T2=308×3.037.5 Which gives

# T_2 = 24.6 degrees K

Subtract 273 to find degrees C.

24.6−273=−248 degrees C. ( to three significant digits.)