Question

Volume of gas at stp is 1.12 into 10 raise to power minus 7 cc calculate the number of molecules in it

Answer 1

Answer:

3x10^12

Explanation:

Volume of 1 mole gas at STP=22.4L

Hence no. of moles of gas=1.12x10^-10L/22.4L

                                             =5x10^-12 moles

Number of molecules=No. of moles x Na

Hence no.of molecules=5x10^-12x6x10^23

                                       =3x10^12 (approx.)