3 years ago

Which of the changes are physical changes

Chemistry

1 answer:

Orlov [11]3 years ago

3 0

Answer:

boiling, melting, freezing, and shredding.

Explanation:

Some examples.

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lisov135 [29]

Answer:

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Explanation:

Step 1: Given data

Concentration of formic acid: 0.03 M

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Step 2: Calculate the pH

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$pH = pKa +log\frac{[base]}{[acid]} = -log 1.8 \times 10^{-4} + log \frac{0.02}{0.03} = 3.6$

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