Question

Calculate mass of pottasium sulphate to prepare it 10% (mass solution) in 100g of water?
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Answer 1

Let the mass of potassium sulfate used to prepare be $x$

We are acknowledged that

Mass by percentage of a solution = $\frac{Massofsolute}{Massofsolution}\times 100$

$\frac{10}{100}=\frac{x}{100+x}$

$x=11.1gm$