How many moles of hcl are in 20 ml sample of .10 m hcl

0.002 moles

Concept tested: Molarity

We are given;

We are required to calculate the number of moles of HCl

What is molarity?

How is it calculated?

To calculate the number of moles we rearrange the formula;

Moles = Molarity × Volume

In this case;

Moles of HCl = 0.10 M × 0.02 L

                      = 0.002 moles

Therefore, the number of moles of HCl is 0.002 moles

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons