Question

How much oxygen is required to obtain 4.4g of carbon dioxide by burning 1.2 g of pure carbon?
​

Answer 1

Answer:

Moles of CO2 ​ = 4.4 /  44

​ =0.1 moles

∴ Number of molecules of CO2

​   =0.1×6.022×10^23  

=6.022×10^22   molecules

But 1 molecule of CO2

​contains 2 oxygen atoms.

∴ Number of oxygen atoms=2×6.022×10^22

=12.044×10^22   atoms

=1.2×10^23  atoms

Explanation:

here ^ stands for the power of the number 10

pls mark me brainliest and give a thanks too=D