Question

Example 1.4
Calculate the number of atoms of carbon (C) and oxygen (O) alon
with total number of atoms in 44 g of dry ice (Dry ice is solid CO2).​

Answer 1

Answer:

Oxygen is correct answer

Answer 2

Answer:

Moles of CO ²

= 4.4/44

=0.1 moles

∴ Number of molecules of CO²

=0.1×6.022×10 ²³

=6.022×10 ²²molecules

But 1 molecule of CO²

contains 2 oxygen atoms.

∴ Number of oxygen atoms=2×6.022×10²²

=12.044×10 ²²atoms

=1.2×10 ²² atoms