Question

calculate the quantity of sodium chloride required to make 400ml
in 20 solution ?​

Answer 1

Answer:

20g of NaCl

Explanation:

1 in 20 solution means 1/20 = 5% solution,

concentration = mass / volume

mass = volume x concentration

mass of NaCl = 0.4L * 0.05

0.02Kg = 20g

Answer 2

The quantity of sodium chloride required to make 400ml in 20 solutions is 20 gm.

Explanation:

Given  $1$ in $20$ solution

$1$ in $20$ solution means $1/20$ =$5$ % solution,

concentration = $\frac{mass}{volume}$ ---------- 1

Then,mass = volume x concentration --------- 2

given the $400ml$ solution the quantity of sodium chloride is to be calculated substituting the value in equation $2$

mass of NaCl = $0.4L$ * $0.05$

which is calculated as $0.02Kg$ = $20g$

So $20 gm$ of sodium chloride is required to make $400 ml$ in $20$ a solution.