Question

What volume will 30 g of carbon monoxide, CO, fill at STP?

Answer 1

Answer:

24dm³

Explanation:

Given parameters:

Mass of CO = 30g

Unknown:

Volume of CO at STP  = ?

Solution:

To solve this problem, we need to find the number of moles of CO in the given mass.

      Number of moles of CO = $\frac{mass}{molar mass}$  

Molar mass of CO = 12 + 16 = 28g/mol

   Number of moles  = $\frac{30}{28}$  = 1.07moles

Now;

      1 mole of a gas occupies 22.4dm³ volume at STP

   1.07moles will occupy  1.07 x 22.4  = 24dm³