Question

how much are other chemicals must be evaporated from 400 grams of a hand sanitizer that is 24% alcohol to strengthen is to a hand sanitizer that is 30% alcohol correct your answer to the nearest whole number

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer: 80 g of sanitizer need to be evaporated in order to increase its strength to 30%.

Step-by-step explanation:

400g of hand sanitizer contains 24% alcohol, which means:

$alcohol =24/100*400 = 96g$

For increasing the strength to 30%, some amount of sanitizer needs to be evaporated :

$30/100*(400-X)=96\\400-X=320\\X=80g$

The amount that is evaporated is 80g.