SITUATION #1: One way to prevent the pandemic COVID-19 is to wash our hands with soap and applying alcohol as a disinfectant. The active ingredient in alcohol is ethanol. As you read the label of the alcohol, it is 70% ethyl alcohol in a 250mL bottle. With your curious mind, you want to know how many mL of ethyl alcohol is present in a 250mL. What would you do?
Question #1: What is the volume of a 70% ethyl alcohol solution in a 250mL bottle to
fight COVID-19 in situation #1?
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Answer:
Wear mask and maintain social distance
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Answer:
we can find the exact volume of ethyl alcohol by finding 70% of 250 ml.
175 ml of ethyl alcohol will be there.
Explanation:
The level at the bottle shows that this bottle contains 70% of ethyl alcohol. Which means 30% are other components.
So to find volume of ethyl alcohol, we have to find 70% of the total volume of disinfectant.
Thus ,
(70/100 )x 250 = 175 ml will be our answer.
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