Question

Consider the substances below. • 1 mol of beryllium • 1 mol of salt • 1 mol of water • 1 mol of hydrogen Which statement is true about these substances? They have exactly the same mass. They have different numbers of particles. They have the same number of atoms. They have different masses.

Answer 1

hello friend .
here goes your answer .
they have the same number of atoms. they have different masses are true . and rest are incorrect.
i hope this was sufficient and helpful too.

Answer 2

Hey mate here is your answer.

Answer:

1 mol of bryllium  =be

1 mole of water =H20

1 mole of salt=NA2so4

1 mole of hydrogen =H

All above given atoms have the same number of atoms

similarlyall of them have different masses

they have different number of particles.

and they have different number of atoms.

hope this wil be helpful