Question

3. How many moles are found in 11.2 L of H2O vapor (steam) at STP?

Step by step please help

Answer 1

0.5mole

Step-by-step explanation:

Given:

Volume of water vapor at STP = 11.2L

Unknown:

Number of moles = ?

Solution:

To solve this problem, we use the expression below;

A mole of a gas occupies a volume of 22.4L at STP;

Number of moles =
`(volume of gas)/(22.4)`

So;

Number of moles =
`(11.2)/(22.4)` = 0.5mole

The number of moles of steam is 0.5mole