1.

The number of oxygen atoms in 4.4 gm of CO2 is, (1) 6 x 1022 (2) 12 x 1023 (3) 1.2 x 1023 (4) 6 x 1023 

Answer»

Correct option (1) 6 x 1022

Explanation:

44 g of CO2 contains 6.022 × 1023 CO2 molecules

∴4.4 g of CO2 contains 6.022 × 1022 CO2 molecules

Each CO2 molecule contains two oxygen atoms 

∴ 6.022 × 1022 CO2 molecules contain 1.2 × 1023 O atoms.



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