Question

Please help me out with the solution and answer to the question below

Answer 1

First, find the number of moles it must contain.

`c=(n)/(V)`

Where n is the number of moles, c = 0.5 and V = 600 mL. But, we need to use the volume in Liters, so we divide 600mL by 1000.

`V=600mL(1L)/(1000mL)=0.6L`

Once we have the correct unit, find n.

`n=0.5\cdot(mol)/(L)\cdot0.6L=0.3\text{moles}`

Now, we need to know what volume would contain 0.3 moles, using the same formula.

`V=(n)/(c)`

Where n = 0.3 moles and c = 1.2 mol/L.

`V=\frac{0.3\text{moles}}{1.2\cdot(moles)/(L)}=0.25L`

At last, transform 0.25 Liters into mL.

`V=0.25L\cdot(1000mL)/(1L)=250mL`

Therefore, the volume is 250 mL.