Question

Calculate total no. of atom in 4.4g of CO2

Answer 1

Molar mass CO2 = 44 g/mol 

You have 4.4g , so you have 4.4/44 = 0.1 mol CO2 

1mol CO2 has 6.022*10^23 molecules 

0.1mol CO2 has (6.022*10^23)*0.1 = 6.022*10^22 molecules 

1molecule of CO2 contains 2 atoms of O 

Therefore, 6.022*10^22 molecules of CO2 will contain (6.022*10^22) *2 = 1.204*10^23 atoms O

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Answer 2

Answer:

Explanation:

no of mole = 4.4g /44 = 0.1 mole

Total no of Co2 molecule =

mole X Avogadro no.

= 0.1 X Na

Now, 1 mole of CO2 have 3 atoms.

So total no of atoms = 3 X 0.1 X Na

= 0.3Na (here, Na is Avogadro no.)

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