We’re being asked to calculate the mass percent when 2.45 g sugar is dissolved in 200 g water.

We’re given the mass percent of the solution and we're going to use the **mass percent formula** shown below:

$\overline{){\mathbf{mass}}{\mathbf{}}{\mathbf{percent}}{\mathbf{=}}\frac{\mathbf{mass}\mathbf{}\mathbf{component}}{\mathbf{total}\mathbf{}\mathbf{mass}}{\mathbf{\times}}{\mathbf{100}}}$

Since we are dealing with a **solution**, we can rewrite the equation as:

$\overline{){\mathbf{\%}}{\mathbf{}}{\mathbf{mass}}{\mathbf{=}}\frac{\mathbf{mass}\mathbf{}\mathbf{solute}}{\mathbf{mass}\mathbf{}\mathbf{solution}}{\mathbf{\times}}{\mathbf{100}}}$

**Calculate the mass of mass percent sugar****:**

We dissolve 2.45 g of sugar in 200.0 g water. What is the mass percent of sugar in the solution?

A) 1.21%

B) 1.23%

C) 2.42%

D) 123%

E) none of the above

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What scientific concept do you need to know in order to solve this problem?

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