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adoni [48]
2 years ago
15

Three electrons are removed from each of 4 atoms. Write an expression to represent the net change on the charge for the group of

atoms.
Mathematics
1 answer:
Ymorist [56]2 years ago
3 0

Answer:

The charge of each electron is -1, so the charge of three electrons is -3. Removing something is denoted by a negative sign. The expression that represents the removal of three electrons from each of four atoms is (-3)(-4).

Step-by-step explanation:

Enjoy

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How do you make 4/3 and 3/3 have a denominator of 5
bagirrra123 [75]

Answer:

Step-by-step explanation:

Actually, you can't.  You could multiply the numerator and denominator of each 4/3 and 3/3 by 5, obtaining:

5(4)          5(3)

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6 0
3 years ago
Jamie has 100 milliliters of a 50% isopropyl alcohol solution. How many milliliters of a 96% isopropyl alcohol solution does she
serious [3.7K]

Answer:

318.2 ml

Step-by-step explanation:

Jamie has 100 ml of a 50% isopropyl alcohol solution.

She wants to prepare a solution of 85% by adding 96% solution of isopropyl alcohol solution.

Let the amount of 96% solution required = x ml

Final amount of 85% isopropyl alcohol solution = (100 + x) ml

Therefore, equation for this situation will be,

100 × (50%) + (x) × (96%) = (100 + x) × (85%)

100(0.5) + 0.96x = 0.85(100 + x)

50 + 0.96x = 85 + 0.85x

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x = \frac{35}{0.11}

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Therefore, she will require 318.2 ml of 96% isopropyl alcohol solution.

4 0
3 years ago
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