Problem: What is the mass percent of a solution prepared by dissolving 18.9 grams of solid into 39.5 grams of water? A) 47.8% B) 58.4% C) 32.4% D) The identity of the compound must be known. E) none of the above

FREE Expert Solution

We’re being asked to calculate the mass percent when 18.9 g solid is dissolved in 39.5 g water.


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

mass percent=mass componenttotal mass×100


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

% mass=mass solutemass solution×100


Calculate the mass of mass percent solid:

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Problem Details

What is the mass percent of a solution prepared by dissolving 18.9 grams of solid into 39.5 grams of water? 

A) 47.8% 

B) 58.4% 

C) 32.4% 

D) The identity of the compound must be known. 

E) none of the above

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