Question

Calcutta no. Of oxygen atoms of 440amu of CO2

Answer 1

Answer:

Explanation:

No. of atoms= moles×avogadro no.×atoms

Moles= 440/44= 10

Avogadro no. = 6.023× 10²³

No. of atoms= 3

So..

10×6.023×10²³×3

= 180.6×10²³

Answer 2

Explanation:

Moles of CO2=444.4=0.1 moles

∴ Number of molecules of CO2=0.1×6.022×1023

=6.022×1022 molecules

But 1 molecule of CO2 contains 2 oxygen atoms.

∴ Number of oxygen atoms=2×6.022×1022

=12.044×1022 atoms

=1.2×1023 atoms