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Bingel [31]
2 years ago
5

You are working in a lab and you need a solution of 22% acid. In the cupboard, you find a 10% and a 30% solution, but not a 22%

solution. You will have to make your own 22% solution. You will need liters of the 10% and liters of the 30% to make 15 liters of a 22% solution?
Mathematics
1 answer:
disa [49]2 years ago
7 0

The volume of 10% solution will be 6 l and 9 litre of the 30 % solution will be taken.

<h3>What is Volume ?</h3>

Volume is the space occupied by a three dimensional object .

The concentration of solution required is 22% acid

The concentration of solution available is 10% and 30%

The total volume required is 15 liters

The formula for making a mixture is

Concentration = ( m₁x₁ +m₂x₂) / (x₁+x₂)

22 = (10 * x + 30 *(15 -x))/( 15)

10 x + 450 - 30x =330

-20x = -120

x = 6

The volume of 10% solution will be 6 l

and 9 litre of the 30 % solution will be taken.

To know more about Volume

brainly.com/question/13338592

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iogann1982 [59]

Answer:

-10  /  -5  /  -1  /  0  /  1  /  5  /  10

Step-by-step explanation:

I hope this helps!

5 0
3 years ago
What is the average of the four smallest of integers ?
Elanso [62]
This question is easier than it seems. If there are 9 consecutive integers with the mean being 16, then 16 must be the median. So just add four on top and four below 16 to give you your range of 9 values, 12-20. 12+13+14+15+16+17+18+19+20=144, 144/9=16. So the mean of the first four numbers is (12+13+14+15)/4= 13.5. If you check, 13.5 is also the median of these four numbers.

 
6 0
3 years ago
Find the area of the following shape:
zalisa [80]

Answer:

36cm^2

Step-by-step explanation:

total area: 6x(4+3)=42

total area excluding the space: 42-(2x3)=36

4 0
2 years ago
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Romashka [77]

Answer:

8

Step-by-step explanation:

3 0
2 years ago
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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
murzikaleks [220]

Answer: 9 hours

Step-by-step explanation:

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