Question

Describe how chemists use mass as a way of getting a precise estimate of the number of entities in a sample.

Answer 1

Answer:

Explanation:

To start with, the mass of a substance is centered on the amount of particles contained in it.

Mass of a substance measure is the same anywhere it is taken.

In chemistry, the concept of mole is used to find the exact estimate of  the number of entities in a sample.

A mole of substance is quantity that is used to express the number of particles contained in it.

  1 mole of any substance contains the Avogadro's number of particles.

This amount of particles is given as 6.02 x 10²³; the particles can be protons, neutrons, electrons e.t.c.

To find the number of moles;

        Number of moles  = $\frac{mass}{molar mass}$

       Through this, we clearly ascertain the number of entities in a sample given the mass.