Question

A bottle contains 2.55L of gas at STP.How many moles of gas are present?mol

Answer 1

Step-by-step explanation:

We are given: volume = 2.55L

At STP: Temperature = 273.15 K

: Pressure = 1 atm

: R = 0.08205 L.atm/mol.K

Using the ideal gas law:

`\begin{gathered} PV\text{ = nRT} \\ \\ \therefore\text{ n = }(PV)/(RT)\text{ = }(1*2.55)/(0.08205*273.15)\text{ = 0.11 mol} \end{gathered}`

Answer:

n = 0.11 mol