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VLD [36.1K]
4 years ago
14

The purpose of a buffer is to ____

Chemistry
1 answer:
jeka944 years ago
6 0

Answer:

The answer is:

(D) lessen the effect of negative news

Explanation:

In chemistry, a buffer is a solution form by a  weak acid and its conjugate base, or a weak base and its conjugate acid that can resist changes in pH when an acid or base is added to it, as it neutralizes them.

So, as it neutralizes the effect of the acid or bases in pH, the chosen answer for the question is that a buffer is to lessen the effect of negative news.

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A sample of oxygen gas at a pressure of 1.14 atm and a temperature of 21.5 degrees Celsius, occupies a volume of 815 ml. If the
maria [59]

Answer:

The volume of the gas will be 573.52 mL.

Explanation:

Boyle’s law states that <u>the  pressure of a fixed amount of gas at a constant temperature is inversely proportional  to the volume of the gas</u>.

The equation for Boyle's law is:

P₁V₁ = P₂V₂

We want to know V₂, that is, the volume of the container after the compression. We rearrange the equation and calculate:

V₂ = P₁V₁ ÷ P₂

V₂ = 1.14 atm × 815 mL ÷ 1.62 atm = 573.52 mL

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