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Scilla [17]
3 years ago
15

The equation for the pH of a substance is pH = –log[H+], where H+ is the concentration of hydrogen ions. Which equation models t

he concentration of hydrogen ions (H+) of a solution whose pH is 7.2?
Mathematics
1 answer:
Zanzabum3 years ago
8 0

Answer:  [H+] = 10^-7.2

Step-by-step explanation:

Given that the PH of the solution = 7.2

Using the formula pH = –log[H+]. To get the H+ concentration from the pH, raise both sides by the base of 10. Then we have

10^ -pH = H+. with pH of 7.2,

Thus the answer to this problem is

[H+] = 10^-7.2

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Step-by-step explanation:

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Simplify that to above answer

8 0
3 years ago
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Jan has $130. If she saves $25 per week, in how many weeks will she have $600?
serious [3.7K]

Let's represent the number of weeks with the variable 'w':

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3 years ago
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Answer:

smallest number=626

middle number=628

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Step-by-step explanation:

To find the numbers, let's use n as the variable. Since we know that the numbers are consecutive even numbers, we know that they increase by 2. For example, we could have 2+4+6=12.

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middle number: n+2

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All we have to do is add these together and set it equal to 1884.

n+(n+2)+(n+4)=1884          [combine like terms]

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Now that we know n=626, we also know that the other numbers are 626, 628, 630 respectively.

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3 years ago
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we know that

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Step-by-step explanation:

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