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padilas [110]
3 years ago
9

In a chemistry class 7 Liters of a 4% Iodide solution must be mixed with a 10% solution to get a 6% solution how many liters of

a 10% solution are needed
Mathematics
1 answer:
kenny6666 [7]3 years ago
5 0

Answer:

3.5

Step-by-step explanation:

If x is the volume of 10% solution, and y is the volume of 6% solution, then:

x + 7 = y

0.10x + 0.04(7) = 0.06y

Solve the system of equations.

0.10x + 0.04(7) = 0.06(x + 7)

0.10x + 0.28 = 0.06x + 0.42

0.04x = 0.14

x = 3.5

3.5 liters of 10% solution is needed.

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C, D, and E

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When trying to solve for the cost of each item you will find a rainbow fish is $8.50 and a tetra is $2.50. If you use that information to solve the other answer choices C, D, and E would be correct

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3 years ago
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Step-by-step explanation:

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3 years ago
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disa [49]

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Step-by-step explanation:

7 0
3 years ago
Can someone answer this question please please help me I really need it if it’s correct I will mark you brainliest .
ioda

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Step-by-step explanation:

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