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3 years ago

BRAILY I NEED HELP ASAPP

Chemistry

1 answer:

Tasya [4]3 years ago

6 0

Explanation:

Mass is the amount of matter in an object. Mass is measured in grams (1000 grams = 1 kilogram). 2. Solid- The particles of matter in a solid are tightly packed together and have a definite shape and take up a definite amount of space (volume).

for example and apple you can use a scale to find the mass. or a graduated cylinder to find the volume

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4 years ago

Be sure to answer all parts. Calculate the pH of the following two buffer solutions: (a) 1.4 M CH3COONa/1.6 M CH3COOH. (b) 0.1 M

aalyn [17]

Answer:

a) pH = 4.68 (more effective)

b) pH =4.44.

Explanation:

The pH of buffer solution is obtained by Henderson Hassalbalch's equation.

The equation is:

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

a) pKa of acetic acid = 4.74

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This is more effective as there is very less difference in the concentration of salt and acid.

b) pKa of acetic acid = 4.74

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[acid] = [CH₃COOH] = 0.2 M

$pH = 4.74 + log \frac{0.1}{0.2}= 4.44$

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4 years ago

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Answer:

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Explanation:

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