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morpeh [17]
3 years ago
8

Caffeine content in a 5-ounce cup of brewed coffee ranges from 60 to 180 mg, depending on brew time, coffee bean type, and grind

. (a) use the midrange to estimate the measure of centre. midrange 120 (b) use the empirical rule to estimate the standard deviation. standard deviation 20 (c) why is the assumption of a normal, bell-shaped distribution important in making these estimates. especially question d ​
SAT
1 answer:
Morgarella [4.7K]3 years ago
5 0

Answer:

idk

Explanation:

I see us in the park strolling in the summer haze...

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What is the ph of a 0. 300 m solution of aniline (c₆h₅nh₂, kb = 4. 3 × 10⁻¹⁰)?.
yawa3891 [41]

The pH of the solution of aniline is; pH = 4.64

<h3>pH of aniline solution</h3>

According to the question;

  • We are required to determine the hydrogen ion concentration, pH of the given aniline solution.

Since, the given Kb is kb = 4. 3 × 10⁻¹⁰.

Hence, it follows that;

  • Ka = 10-¹⁴/4. 3 × 10⁻¹⁰.

  • Ka = 2.3 × 10⁻⁵.

On this note, the pH of aniline solution is;

  • pH = -log {2.3 × 10⁻⁵}

pH = 4.64.

Ultimately, the pH of the aniline solution given is; 4.64

Read more on pH of solutions;

brainly.com/question/25639733

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2 years ago
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hope this helps.
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What is the function of a prepositional phrase?
iragen [17]

Answer:

to join together phrases

Explanation:

A prepositional phrase can be used to modify nouns and verbs. They provide color information in a sentence.

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