Question

calculate the number of molecules present in 4.4g of CO2

Answer 1

(4.4/44)×6.022×10^23

= 6.022×10^22

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Answer 2

mass of co2 is 4.4g .

Molar mass =12+16*2 =44

no. of mole =mass/Molar mass

=4.4/44=1/10 .

No. of molecule of co2 = no. of mole *

Avagadro no.

=1/10*6.022*10^23

=6.022*10^22