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Galina-37 [17]
3 years ago
7

THIS IS A SCIENCE QUESTION NOT A CHEMISTRY QUESTION! Why does the same side of the moon always face Earth?

Chemistry
2 answers:
Norma-Jean [14]3 years ago
8 0

Answer:yes

Explanation:Because yes

puteri [66]3 years ago
8 0

Answer:

C.

Explanation:

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You have a 250. -ml sample of 1. 28 m acetic acid (ka = 1. 8 x´ 10–5). calculate the ph of the best buffer.
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The ph of the best buffer is 4.74

The given acetic acid is a weak acid

The equation of the pH of the buffer

pH = pKa + log ( conjugate base / weak acid ).

For best buffer the concentration of the weak acid and its conjugate base is equal.

pH = pKa + log 1

pH = pKa + 0

pH = pKa

given Ka = 1.8 × 10⁻⁵

pKa = - log ka

pH = -log ( 1.8 × 10⁻⁵ )

pH = 4. 74

Hence the pH of the best buffer is 4.74

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d. precise but not accurte

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If a neutral compound is composed of carbon and hydrogen and you know that it has exactly 2 carbons connected by a double bond,
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