Question

Please help

3. What mass of sodium chloride must be dissolved in 250 mL water to make a 0.60% (m/v) solution? Assume the solution volume is 250 mL.

Answer 1

0.0015 g in Litres

0.15g in Milliliters

Step-by-step explanation:

In Litres

%m/v = mass of solute(s)/Volume of solution (V) ×100

0.60%=s/0.25 ×100

0.25×0.60= S×100

Make S to stand alone

S= 0.15/100

S= 0.0015g

IN MILLILITERS

Same Formula

25×0.60= S × 100

S= 15/100

S= 0.15g