Question

of CO2
31. Which of the following represents 1 g molecule of
the substance?
(1) 6.02 x 1024 molecules of NH3
(2) 4 g of helium gas
(3) 40 g of calcium oxide
(4) 127 g of iodine gas
highest mass?​

Answer 1

Answer:

2) 4g of helium gas

1g molecule of the substance means, 1 mole of substance. Here by checking molecular mass and no. of atoms per mole (NA = 6.02×10^23), we can get 4g of helium(He) is of mole only.

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