Question

plsss plss answer...doubt for my exam​

Answer 1

Answer:

A and D have same number of atoms.

B and C have same no.of atoms.

________________________

explanation :

A)1 mole of hydrogen weighs 1g.

therefore, 2 moles of H weigh 2g.

B) 1mole of Oxygen weighs 16g.

C)1 mole of nitrogen weighs 14g.

D)1 mole of Helium weighs 4g.

therefore, 2 moles of He weighs 8g.