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3 years ago

List two examples of objects at home that use chemical energy and describe what the chemical energy is being transformed into.

Chemistry

1 answer:

mr_godi [17]3 years ago

4 0

Answer: Batteries and Food

Explanation:

On the batteries that we use for example for a watch in the kitchen, occurs a chemistry reaction, called redox between Zn and MnO2. The Zn is oxidized (in the anode) and the MnO2 is reduced (in the cathode). In the oxidation, the athom loses electrons and in the reduction the opposites.

Regarding the chemical reactions that occur in the food that we consume, the hydrolisis that occurs in the stomach. The hydrochloric acid that is secreted in the stomach allows the activation of an enzyme, pepsinogen, which hydrolyzes the proteins present in the food consumed. That is, it hydrolyzes the peptide bonds of the proteins, which is between an amino and carboxyl bond of each amino acid that makes them up.

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3 years ago

. What is the density of a block of plastic if the volume of the block is 5 cm and the mass is 17.2 g?

stellarik [79]

Answer:

<h3>The answer is 3.44 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

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volume = 5 cm³

We have

$density = \frac{17.2}{5} \\$

We have the final answer as

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3 years ago

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alisha [4.7K]

Answer:

option b is the correct answer

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2 years ago

What form of matter has a definite shape and takes up space?

BARSIC [14]

Answer:

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Explanation:

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2 years ago

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In which of the following types of solution is the rate of dissociation equal to the rate of crystallization? Concentrated Super

Butoxors [25]

In a <u>Saturated </u>solution, the rate of dissociation equal to the rate of crystallization

Explanation:

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3 years ago