Question

calculate the no of atom present in 4.4 g of CO2

Answer 1

mole=given mass /molar mass.. - - 1

mole= no of particles /6.022 ×10^23. --2

so in 1st equation..

mole =4.4/44=0.1 (co2=44g).

so put value of mole in equation 2.

we get.

0.1×6.022 ×10^23.=no of particles..

hope it helps you..

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by Akshita

Answer 2

c=12

o=16

it is CO2

12+16×2

12+32

44u and

the atom present in CO2 is 44u. it is half answer