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Cloud [144]
2 years ago
9

I need to know 5 and 6

Chemistry
1 answer:
irina [24]2 years ago
7 0
6-cumbustion reaction
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What is the pH of a solution that has a pOH of 5.9
Stella [2.4K]

Answer:

pH = 8.1

Explanation:

Assuming that we are at 25 degrees Celsius, pH + pOH = 14.

We can then plug in the given pOH and solve for pH:

pH + pOH = 14

pH + 5.9 = 14

pH = 14 - 5.9 = 8.1

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3 years ago
Which of the following units is best when measuring the length of an object?
podryga [215]

Answer:metres

Explanation:It would be best to measure the length of an object in metric system such as millimeter, centimeter, mere etc..

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3 years ago
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What volume of a 2.5 M NaOH solution is required to make 1 liter of a 0.75 M NaOH
defon
V1M1 = V2M2 

<span>V1 × 2.5 = 1 × 0.75,
so     V1 = 0.75/2.5
              = 0.3 </span>
6 0
3 years ago
What is Lewis symbol for K+
Alexxx [7]

Lewis symbol for K+ is given by a dot and K.

<h3>Meaning of Lewis symbol</h3>

Lewis symbols can be defined as a symbol the is used in describing the valence electron configurations of an atom ions.

A Lewis symbol consists of the symbol of the element and then surrounded by one dot for each of its valence electrons.

In conclusion, Lewis symbol for K+ is given by a dot and K.

Learn more about Lewis symbol: brainly.com/question/6605265

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1 year ago
Which statement about the electron-cloud model is true? It is the currently accepted atomic model. It can easily be replaced by
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Answer:

3 choice

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