Question

What pressure will be exerted by 10 moles of hydrogen gas in a 7.5 L cylinder at 20°C?(Given: R = 8.314 L∙kPa/K∙mol)

3248 kPa
24360 kPa
324.8 kPa
24.36 kPa
0.2436 kPa

Answer 1

the first one  is what i got

Answer 2

The value of the pressure will be 3248 kPa.

Step-by-step explanation:

Let the pressure exerted by the gas be P

The volume occupied by the gas = V = 7.5 L

Temperature of the gas = T =20°C = 293 K

(0°C = 273 K)

Number of moles of gases = 10 mol

Using an ideal gas equation:

`PV =nRT`

`P=(nRT)/(V)=(10 mol*8 .314 L kPa/K mol * 293 K)/(7.5 L)`

P = 3248.0026 kPa ≈ 3248 kPa

The value of the pressure will be 3248 kPa.