By 0.3 M (of sodium chloride), do they mean the mole?

Question

By 0.3 M (of sodium chloride), do they mean the mole?

Is M the mole?

Thank you.

Answer 1

Exactly: They are telling you that in 1 litre of the solution you will have 0.30 moles of solute, which is NaCl.

The container is labeled: 0.3 M NaCl

Answer 2

Yes, mole is the amount of solution present in a sample (Nacl)

Answer 3

No M is molarity

Molarity is no. of moles per unit volume (concentration in terms of moles)

0.3 M means 0.3 moles of NaOH are present in 1L of NaOH solution (0.3 mol per L).