Question

which quantity contains a total of 3.01 x 10²³ molecules of CL2 at STP?

Answer 1

Answer:

1 mol = 6.022×10  

23

 

3.01×10  

23

=  

6.022×10  

23

 

3.01×10  

23

 

​  

=0.5moles

Hence, as per given, 0.5 moles of gas has mass = 20 grams.  

So, 1 mol of gas has mass =2×20=40 grams.

Hence, we can say that this gas has molar mass = 40 gram/mole.  

1 mole gas has 22.4 L volume at STP, hence, 0.5 moles of this gas 11.2 L volume.

Explanation: