Foundation
Chemistry Foundation
Mole Concept and Calculation
Question

The number of molecules in 11.2 L of CO2 at NTP will be -

3.011× 1023    

3.011 × 1020    

6.023 × 1020

6.023 × 1023    

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Solution

∵   22.4 L of CO2 at NTP contains
      = 6.023 × 1023 molecules.
∴   11.2 L of CO2 at NTP will contain
     =6.023×102322.4×11.2
    =3.011 × 1023 molecules