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3 years ago

I NEED HELP! If you can

Chemistry

1 answer:

Kipish [7]3 years ago

4 0

Answer:

1. Chemical, Radiant, Heat

2. Mass, Speed, Heat

3. Mechanical, Heat, Chemical

4. Heat, Electrical, Radiant

Depending on whether or not you can only use the choices at the top.

Explanation:

1. Chemical, Radiant, Thermal

2.Mechanical, Elastic, Thermal

3. Chemical, Mechanical

4. Radiant, Electrical, Thermal

Mechanical energy because of the mixing and mashing of the teeth. https://www.solarschools.net/knowledge-bank/energy/types (check this website because I'm not sure if I'm right yet).

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Examine the following equations.

Alex

Answer: (A) and (D)

Options (A) and (D) represent beta decay.

Explanation:

It is very simple to find beta decay in a nuclear reaction. In beta decay , neutron breaks down into a proton and an electron. After that electron is emitted from the nucleus,while proton remains inside nucleus. The resulting daughter nuclei will have one more proton and one less neutron.

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3 years ago

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Defined as the negative logarithm of the concentration of OH-

Marat540 [252]

Answer:

As with the hydrogen-ion concentration, the concentration of the hydroxide ion can be expressed logarithmically by the pOH. The pOH of a solution is the negative logarithm of the hydroxide-ion concentration. pOH=−log[OH−] The pH of a solution can be related to the pOH.

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4 years ago

Label each of the following changes as a physical change or chemical change. Give evidence to support your answer.

SVEN [57.7K]

Answer:

A catalytic converter changes nitrogen dioxide to nitrogen gas and oxygen gas is a chemical change.

Explanation:

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In this case, since physical changes do not modify the molecular composition and structure of the material undergoing it whereas the chemical change does, for catalytic converters we should know they promote chemical reaction in which the composition is changed; for instance, for the given example, the following chemical reaction is the evidence:

$2NO_2\rightarrow N_2+O_2$

As you can see, nitrogen and oxygen are no longer bonded but separated by themselves, therefore, this is a chemical change.

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3 years ago

A light twig is barely floating on the surface of water. What will most likely happen to the twig if a drop of dishwashing deter

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