Question

A solution is prepare by dissolving 45g of sugar in 180g of water. Calculate the mass percentage of water​

Answer 1

Answer:

80 %

Explanation:

45 g + 180 g = 225 g

Mass % of water = ( 180/225 )*100

= (180/15*3)*20

= (180/9)*4

= 80 %

Answer 2

The mass percentage of water​ is 80%

Explanation:

To calculate the mass percent of element in a given compound, we use the formula:

$\text{Mass percent of A}=\frac{\text{Mass of A}}{\text{mass of A +mass of B}}\times 100$

To find mass percent of water

$\text{Mass percent of water}=\frac{\text{Mass of water}}{\text{mass of water +mass of sugar}}\times 100$

Mass of sugar= 45 g

Mass of water = 180 g

Putting in the values we get:

$\text{Mass percent of water}=\frac{180g}{180g+45g}\times 100=80\%$

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