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Grade: 12
        
If 3.01×1020 molecules are removed from 98mg of H2SO4 what is the number of moles of H2SO4 left?
7 months ago

Answers : (1)

Adarsh
764 Points
							
Dear Akshay,
first of all we calculate no of molecule in 98mg h2so4,
molecular wt. of h2so4 is 98g ,
that means 98g h2so4 has 6.02 x 1023 molecule
so, 98mg h2so4 has 6.02 x 1020 molecule,
now no of molecule left after removal of 3.01 x 1020 molecule = 6.02 x 1020 – 3.01 x 1020 =
3.01 x 1023 molecule.. that means half no of molecule has removed from 98mg h2so4.
REGARDS 
Adarsh.
7 months ago
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