Question

Calculate the number of molecules present in 56 ml of co2 at ntp

Answer 1

no. of moles=molecular volume/given volume
=44ml/56ml
=0.78moles.

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Answer 2

Answer:

1.496 x 10^21 (approx)

Explanation:

     No.of mole = (volume at NTP)/ 22.4 l

                         = 56 ml/ 22.4 l

                         = 56 / 22400

                         = 1 / 400

     No.of mole = (no.of molecule)/ Avogadro no

              1/400 = no.of molecule/ 6.022 x 10 ^ 23

6.022 x 10^23/400 = no.of molecule

0.01496 x 10^23 = no.of molecule

1.496 x 10 ^ 21 = no.of molecule