Question

calculate the number of moles in the 20 cm2 of sulphuric acid​

Answer 1

Answer:

Gram molecular weight of H  

2

​

SO  

4

​

=98g

Given weight= 294g

(i) No. of moles=  

Gram molecular weight

Given weight

​

=  

98

294

​

=3

∴3 moles of H  

2

​

SO  

4

​

=294g

(ii) No. of molecules in 3 moles of H  

2

​

SO  

4

​

=3×6.023×10  

23

 

                                                                       =18.069×10  

23