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djyliett [7]
3 years ago
13

What substances were found in the innermost regions (within about the inner 0.3 au) of the solar system before planets began to

form? view available hint(s) what substances were found in the innermost regions (within about the inner 0.3 ) of the solar system before planets began to form? nothing at all only rocks and metals only hydrogen compounds only hydrogen and helium gases rocks, metals, hydrogen compounds, hydrogen, and helium, all in gaseous form?
Chemistry
1 answer:
coldgirl [10]3 years ago
5 0

The answer would be Rocks, metals, hydrogen compounds, hydrogen and helium, all in gaseous form.

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A solution has a poh of 7. 1 at 10∘c. what is the ph of the solution given that kw=2. 93×10−15 at this temperature? remember to
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A solution has a pOH of 7. 1 at 10∘c. Then the pH of the solution given that kw=2. 93×10−15 at this temperature is 7.4 .

It is given that,

pOH of solution = 7.1

Kw =2.93×10^(-15)

Firstly, we will calculate the value of pKw

The expression which we used to calculate the pKw is,

pKw=-log [Kw]

Now by putting the value of Kw in this expression,

pKw =−log{2.93×10^(-15)}

pKw =15log(2.93)

pKw=14.5

Now we have to calculate the pH of the solution.

As we know that,

pH+pOH=pKw

Now put all the given values in this formula,

pH+7.1=14.5

pH=7.4

Therefore, we find the value of pH of the solution is, 7.4.

learn more about pH value:

brainly.com/question/12942138

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