3 years ago

Help will give brainliest!

Chemistry

1 answer:

Nataly [62]3 years ago

8 0

Answer:

C. An organized way to test scientific ideas.

Explanation:

The Scientific Method is a series of steps to test ideas and hypothesizes. We use the Scientific Method to make it easier to organize and label things step by step.

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2. Use the Henderson-Hasselbalch equation to estimate the pH of a buffer solution that is composed of 20 mL of 10 M sodium forma

Mkey [24]

Answer:

pH of buffer =4.75

Explanation:

The pH of buffer solution is calculated using Henderson Hassalbalch's equation:

$pH=pKa+log[\frac{[salt]}{[acid]}$

Given:

pKa = 3.75

concentration of acid = concentration of formic acid = 1 M

concentration of salt = concentration of sodium formate = 10 M

$pH=3.75+log[\frac{10}{1}]=3.75+1=4.75$

pH of buffer =4.75

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lord [1]

Answer: A

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