the body soap you are using everytime you wash your hands is composed of 30% essential oils, 20% fragrance/perfume and 50% combination of essential acids. How many grams of essential oils are there in a 150 gram of bath soap? a. 30g b. 50g c. 60g d 45g i will report nonsense answer..
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Percent by Mass
D. 45 g
Explanation:
The percent by mass tells us how much of the solute or substance is present in a solution or mixture. It is the ratio of the amount of solute or substance in a given solution or mixture and then multiplied by 100%.
In the given problem, we can make use of percent by mass to compute the mass of the essential oils. The mixture is bath soap which is made up of essential oils, fragrance/perfume, and essential acids. Below are the steps to solve for the mass of essential oils present in the bath soap:
Given:
% by mass of essential oil= 30%
total mass of bath soap = 150 g
Asked: mass of essential oil
Formula:
% by mass =
x 100%
We can derive the formula of the mass of solute,
mass of solute (essential oil) =
x mass of bath soap
mass of solute (essential oil) =
x 150 g
mass of solute (essential oil) = 0.3 x 150g
mass of solute (essential oil) = 45 g
Answer: There are 45 g of essential oil in the 150-g bath soap.
It is important to note that the higher the percent by mass or concentration, the higher the amount of that substance is present in the mixture.
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