If 65.5 ml of hcl stock solution is used to make 450 ml of a 0.675 m hcl dilution, what is the molarity of the stock solution ?

The molarity of the stock solution is 4.64 M

Explanation:

To calculate the molarity of the diluted solution, we use the equation:

where,

are the molarity and volume of the stock solution

are the molarity and volume of diluted solution

We are given:

Putting values in above equation, we get:  

Hence, the molarity of the stock solution is 4.64 M

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

it is the most commonly accepted one