Question

The mass of 3×10^20 molecules of carbon dioxide is

Answer 1

Mass of 6.022 X 10^23 molecules of CO2 is 44g

Mass of 1 molecule of CO2 is 44g/6.022 X 10^23

Mass of 3 X 10^20 molecules will be

=> 44 X 3 X 10^20 / 6.022 X 10^23

=> 21.91 X 10^-3 g

=>2.191 X 10^-2 g

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