Question

What number of mols of KCL are in 5.6 ml a solution of0.12

molar KCL? (give answer with units to the appropriate numberof sf.)
do not use exponential notation.

Answer 1

Moles of potassium chloride = 0.000672 moles

Step-by-step explanation:

Considering:

`Molarity=(Moles\ of\ solute)/(Volume\ of\ the\ solution)`

Or,

`Moles =Molarity * {Volume\ of\ the\ solution}`

Given :

For potassium chloride :

Molarity = 0.12 M

Volume = 5.6 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 5.6×10⁻³ L

Thus, moles of potassium chloride :

`Moles=0.12 * {5.6* 10^(-3)}\ moles`

Moles of potassium chloride = 0.000672 moles