Question

Determine the number of moles of air present in 1.35 L at 750 torr and 17.0°C.

Which equation should you use?

Answer 1

n=PV/RT

Step-by-step explanation:

on edge 2020

Answer 2

0.0560 mol

Step-by-step explanation:

You need to use the ideal gas law equation:

`PV = nRT`

P = 750 torr

V = 1.35 L

n = moles

R = 62.364 L torr
`mol^(-1)`
`K^(-1)`

T = 17.0 ˚C + 273.15 = 290.15 K

Rearranging the equation for n:

`n= (PV)/(RT)`

`n= ((750)(1.35))/((62.364)(290.15))`

n = 0.0560 mol