Question

How many moles are in 11.5 L of a gas at STP?

Answer 1

Answer:

0.51mole

Explanation:

Given parameters:

Volume of gas  = 11.5L

Unknown:

Number of moles = ?

Solution:

Since the gas is at STP,

     Number of moles  = $\frac{volume of the gas }{22.4}$  

    Insert parameters:

 Number of moles  = $\frac{11.5}{22.4}$   = 0.51mole