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Chapter 3: Q70 E (page 172)

What mass of a 4.00% NaOH solution by mass contains 15.0 g of NaOH?

Short Answer

Expert verified

375 g solution of 4.00 % \(NaOH\)contains 15.0 g of\(NaOH\).

Step by step solution

01

Given Data

Solution concentration as percent by mass is calculated as

%mass =\(\frac{{{\rm{mass solute}}}}{{mass{\rm{ solution}}}} \times 100\% \)

Given % mass =4.00 %

% mass solute =15.0 g \(NaOH\)

02

Determine the mass

Find the mass of solution.

Mass solution =\(\frac{{{\rm{mass solute}}}}{{\% mass{\rm{ }}}} \times 100\% \)

\(\frac{{15.0g}}{{4.00\% }} \times 100\% = 375g\)

375 g solution of 4.00 % \(NaOH\)contains 15.0 g of\(NaOH\).

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