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Tcecarenko [31]
3 years ago
14

Find the H+ concentration of of a solution that has a pH solution of 12.24

Mathematics
1 answer:
Maurinko [17]3 years ago
5 0

Answer:

4.83\times 10^{-6}

Step-by-step explanation:

Given that,

The pH of the solution = 12.24

We need to find the H⁺ concentration of the solution. We know that,

pH=-log[H^+]

Put pH = 12.24

So,

12.24=-log[H^+]\\\\\[H^+]=4.83\times 10^{-6}

So, the concentration of H+ is 4.83\times 10^{-6}.

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Pls help answer. Brainliest to the first right answer
zavuch27 [327]

Answer

Is there any numbers or is it just like that?

8 0
3 years ago
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Fing Using Addil
Alexxx [7]

Answer:

keiko- x

imelda- x+ 36

Sarah- x- 38

Step-by-step explanation:

  1. keiko is x since we have not been given his number of boxes.
  2. because imelda's number of boxes was 36 <em>more </em><em>than </em>keiko's, you will add the x which is for keiko and 36 for imelda(x+36).
  3. and sarah's number of boxes will be x-36 because we have been told her number of boxes is 38 <em>fewer </em><em>than </em> keiko's.
7 0
3 years ago
-4x-y=24 missing value
Lunna [17]

Answer:

For solving x         x= -24+y/4  For solving Y                y=−24−4x

Step-by-step explanation:

This is solving for x

Add y to both sides.

−4x=24+y

Divide both sides by -4

and the answer is

x= -24+y/4

THis is solving Y

Add 4x to both sides

−y=24+4x

Multiply both sides by -1

and the answer is  

y=−24−4x

7 0
3 years ago
Consider the probability that greater than 94 out of 153 people will not get the flu this winter. Assume the probability that a
Hatshy [7]

Answer:

0.8212 = 82.12% probability that greater than 94 out of 153 people will not get the flu this winter.

Step-by-step explanation:

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

p = 0.65, n = 153. So

\mu = E(X) = 153*0.65 = 99.45

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{153*0.65*0.35} = 5.9

Consider the probability that greater than 94 out of 153 people will not get the flu this winter

This probability is 1 subtracted by the pvalue of Z when X = 94. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{94 - 99.45}{5.9}

Z = -0.92

Z = -0.92 has a pvalue of 0.1788

1 - 0.1788 = 0.8212

0.8212 = 82.12% probability that greater than 94 out of 153 people will not get the flu this winter.

7 0
3 years ago
Choose the missing step in the given solution to the inequality −6x − 10 &gt; 14 + 2x. −6x − 10 &gt; 14 + 2x _______________ −8x
Vanyuwa [196]

-6x - 10 > 14 + 2x

<u>-2x       </u>    <u>    -2x  </u>

-8x  - 10 >  14               THIS IS THE MISSING STEP

<u>       +10</u>    <u>+10  </u>

-8x       > 24

\frac{-8x}{-8}       \frac{24}{-8}

  x       < -3

Answer: x < -3

8 0
3 years ago
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