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Bumek [7]
3 years ago
13

4. You are asked to make 125 grams of a 7% antifungal cream using tolnaftate powder and Eucerin cream. How many grams of tolnaft

ate powder are needed? Round to the nearest hundredths (w/w)
Medicine
2 answers:
grigory [225]3 years ago
7 0

Answer:

8.75 grams of tolnaftate powder is needed.

Explanation:

Mass by mass percentage (w/w) % : It is the percentage of solute present in 100 grams of solution.

(w/w)\%=\frac{\text{Weight of solute}}{\text{Weight of the solution}}

Given mass of the solution = 125 g

Mass of the solute required = x

Mass by mass percentage of the solution = 7%

7\%=\frac{x}{125 g}\times 100

x=\frac{7\times 125 g}{100}=8.75 g

8.75 grams of tolnaftate powder is needed.

maxonik [38]3 years ago
5 0

Answer:

8.75 g

Explanation:

The mass of tolnaftate must be 7 % of the total mass.

Mass = 0.07 × 125 g = 8.75 g

You need to use 8.75 g of tolnaftate powder.

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