In comparison of 1.0 mole of carbon dioxide (co2) gas to 1.0 mole of ammonia (nh3) gas?

a) the number of molecules is the same, and the number of atoms is the same.

b) the number of molecules is the same, and the number of atoms is different.

c) the number of molecules is different, and the number of atoms is the same.

d) the number of molecules is different, and the number of atoms is different.

Both has the same molecule, CO2 molecule is 1 mole and NH3 molecule is 1 mole too.

Their atoms are different.

1 mole of (means 1 molecule) carbondioxide : 1 mole of O and 2 moles of C = 3 moles of atom (one mole of CO2 made by 3 moles of atom)

1 mole of (means one molecule) ammonia : 1 mole of N and 3 moles of H =4 moles of atom ( One mole of NH3 made by 4 moles of atom )

The answer is B.

sorry for my bad English btw, I tried to explain as far as I can.

Hope it helps!

#MissionExam001

there are two significant figures.