Question

What is the weight percentage of solution formed by dissolving 30g salt in 270 g water?

Answer 1

As we know,
Weight percent = $\frac{Weightofsolute}{Weightofsolute+Weightofsolvent}\times 100$

$\Rightarrow \frac{30}{30+270}\times 100$ $\Rightarrow$ $\frac{30}{300}\times 100\Rightarrow 10\%$