The number of molecules in 1 mL of CO2 at STP is;
1.12 × 1020
2.16 × 1020
3.12 × 1021
2.69 × 1019
22400 mL contains molecules = 6.022 × 1023
so 1 mL contains = (6.022 × 1023)/22400 = 2.69 × 1019 molecules
Equal masses of H2, O2 and CH4 have been taken in a container of volume V at tem
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