Question

Which task most likely involves a calculation that uses moles?

measuring a sugar sample on a balance
counting the number of jellybeans in a jar
determining the number of atoms in a jar of liquid
finding the rate of expansion of a gas-filled balloon

Answer 1

3rd choice

Step-by-step explanation:

I got it correct

Answer 2

determining the number of atoms in a jar of liquid

Step-by-step explanation:

In determining the number of atoms that makes up a substance, the number of moles is very essential.

The mole is the convenient unit of quantity of particles. It can be likened to a quantity of things in everyday life like a dozen, a score and a gross.

• A mole of any substance contains 6.02 x 10²³ particles
• These particles can be atoms, protons, neutrons, electrons etc.

So, to find the number of atoms, we must know the number of moles.