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alexira [117]
3 years ago
15

How to do this problem

Mathematics
2 answers:
ANTONII [103]3 years ago
6 0
First move the decimal by one and add a 0 and then a decimal after the 0.
then divide from there
max2010maxim [7]3 years ago
6 0
If I'm reading that correctly as 405 being square rooted by 1.2 you would get 24.149...
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The answers are: 4.5 g and 56.25 g respectively.

Since the first type of measurement in this question is weight or mass, I'll suppose that the percentage concentration is % mass/mass. For that type of concentration measurement, just multiply the percentage by the total mass to get the mass of the wanted material.
So 150 g * 3% = 150 g * 0.03 = 4.5g

For the 8% solution with the same amount of dry substance, use the ratio of percentages, multiplied by the mass of the first solution to get the wanted amount of new solution:
3/8 * 150 g = 56.35 g
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