## Related questions with answers

Question

Calculate the mass percent $(\mathrm{m} / \mathrm{m})$ for the solute in each of the following solutions:

a. 75 g of $\mathrm{NaOH}$ in 325 g of $\mathrm{NaOH}$ solution

b. 2.0 g} of $\mathrm{KOH}$ and 20.0 g of $\mathrm{H}_2 \mathrm{O}$

c. 48.5 g of $\mathrm{Na}_2 \mathrm{CO}_3$ in 250.0 g of $\mathrm{Na}_2 \mathrm{CO}_3$ solution

Solution

VerifiedAnswered 2 years ago

Answered 2 years ago

Step 1

1 of 3a) $m(NaOH)=75g$ (solute) $m(NaOH)=325g$ (solution)

The mass percent is calculated according to the form:

$\dfrac{mass \ of \ solute}{mass \ of \ solution}\cdot100\%$

**mass percente** = $\dfrac{75g}{325g}\cdot100\%=\boxed{23.08m/m}$

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