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Question

One mole of any substance contains 6.022×1023 atoms/molecules. Number of molecules of H2SO4 present in 100mL of 0.02M H2SO4 solution is __________?

A
12.044×1020 molecules
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B
6.022×1023 molecules
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C
1×1023 molecules
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D
12.044×1023 molecules
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Solution

The correct option is C 12.044×1020 molecules
Moles of H2SO4= Molarity of H2SO4× Volume of solution (L)

=0.02×0.1

=2×103 moles

No. of H2SO4 molecules =2×103×6.022×1023=12.044×1020 molecules

Therefore, the correct option is A.

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