Question

One gram mole of a substance contains 6.022 x 1023 molecules. 1. 24 g of carbon is treated with 72 g of oxygen to form CO2. Identify the limiting reagent. 2. Find the number of molecules of CO2 formed in this situation.​

Answer 1

Answer:

Explanation:

One mole of any substance contains 6.022×10  

23

 atoms/molecules. Number of molecules of H  

2

​  

SO  

4

​  

 present in 100mL of 0.02M H  

2

​  

SO  

4

​  

 solution is __________?

 

 

 

 

Medium

Answer

Correct option is

A

12.044×10  

20

 molecules

Moles of H  

2

​  

SO  

4

​  

= Molarity of H  

2

​  

SO  

4

​  

× Volume of solution (L)

=0.02×0.1

=2×10  

−3

 moles

No. of H  

2

​  

SO  

4

​  

 molecules =2×10  

−3

×6.022×10  

23

=12.044×10  

20

 molecules