Question

Find the number of atoms present in 11grams of CO2

Answer 1

The molecular mass (molar mass) of Carbon dioxide is 44 g, meaning thereby it contains 6.022 x 10^23 molecules of CO2. Since 1 mole of CO2 is 44 g... and you have 1/2 of a mole, you have one half the number of molecules in one mole; 6.02 x 10^23/ 2.

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Answer 2

No. of atoms=given mass /molar mass ×avagadro no.

=11/44×6.022×10^23

1/4×6.022×10^23

=1.5055×10^23

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