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mafiozo [28]
4 years ago
13

Which reaction is an example of an endothermic reaction?

Chemistry
1 answer:
schepotkina [342]4 years ago
7 0

 d) A + B + heat C + D
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Which change would result in a stronger electromagnet?
lidiya [134]
Yep its B i did the test
8 0
3 years ago
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What must happen for an electron to return to its original energy level from a higher energy level?
attashe74 [19]

An electron should emit energy to return to its original energy level from a higher energy level.

<h3>What is an energy level?</h3>

Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found.

The electron absorbs the energy and jumps to a higher energy level. In the reverse process, emission, the electron returns to the ground state by releasing the extra energy that is absorbed.

Hence, an electron should emit energy to return to its original energy level from a higher energy level.

Learn more about the energy level here:

brainly.com/question/17396431

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3 0
2 years ago
A substance has a mass of 100 g and a volume of 10 mL. What is the
Marysya12 [62]

Answer:

<h2>10 g/mL</h2>

Explanation:

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

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

From the question we have

denstity =  \frac{100}{10}  \\

We have the final answer as

<h3>10 g/mL</h3>

Hope this helps you

5 0
3 years ago
Fire extinguishers that spray carbon dioxide on the fire, work very effectively because it forms a blanket around the burning ma
Arte-miy333 [17]

Answer:

I think it will option B it will retain enough heat

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What is the density of a substance with a mass of 0.0450 and a volume of 26.4?
Tanya [424]

Answer:

density \:  =  \frac{mass}{volume}  \\  \:  \:  \:   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  =  \frac{0.0450}{26.4}  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   \:  \:  \:  \:  \:  \:  \:  \: = 0.0017 \\

Explanation:

plz....

Mark it as a brilliant answer

7 0
4 years ago
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