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natali 33 [55]
2 years ago
8

How many grams of sodium chloride are contained in 250.0 g of a 15% NaCl solution?

Chemistry
2 answers:
kramer2 years ago
8 0

Given concentration of NaCl=15%

Means ,

In every 100g of Solution 15g of NaCl is present .

Now

  • Given mass=250g

So ,

\\ \Large\sf\longmapsto 250\times 15\%

\\ \Large\sf\longmapsto 250\times \dfrac{15}{100}

\\ \Large\sf\longmapsto 37.5g

<u>37.5g of NaCl present in 250g of solution.</u>

Yanka [14]2 years ago
3 0

Explanation:

Given concentration of NaCl=15%

Means ,

In every 100g of Solution 15g of NaCl is present .

Now

Given mass=250g

So ,

\begin{gathered}\\ \Large\sf\longmapsto 250\times 15\%\end{gathered}

⟼250×15%

\begin{gathered}\\ \Large\sf\longmapsto 250\times \dfrac{15}{100}\end{gathered}

⟼250×

100

15

\begin{gathered}\\ \Large\sf\longmapsto 37.5g\end{gathered}

⟼37.5g

37.5g of NaCl present in 250g of solution.

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Molarity = 0.002 M

Explanation:

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