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Luden [163]
3 years ago
15

An environmentally-conscious student is breaking the rings from a six-pack drink holder before disposing of it. This reduces the

potential for the six-pack ring to ensnare wildlife and cause ecological harm. In breaking the rings, the student notices that the plastic rings heat up. What argument supports that this is an exothermic chemical reaction?
Physics
1 answer:
katrin2010 [14]3 years ago
8 0

Answer: seen below.

Explanation:

Firstly we need to remember what exothermic reaction is in thermodynamics. exothermic reaction describes a process or reaction that releases energy from the system to its surroundings, usually in the form of heat, but also in a form of light, sound, or electricity.

In this scenario, due to the heating up nature noticed by the ring during breaking shows that energy is being released to the surrounding in the form of heat which suggest it being an exothermic reaction.

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Radon-220 is a radioactive gas. It escapes from underground rocks and causes a large part of the natural background radiation in
Sergeu [11.5K]

Answer: 134 neutrons are there in the nucleus of Radon-220

Explanation:

Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.

Thus, number of protons = atomic number = 86

Mass number is the number of the entities present in the nucleus which is the equal to the sum of the number of protons and electrons.

Mass number = Number of protons + Number of neutrons

220 = 86 + Number of neutrons

Number of neutrons = 134

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Answer:

False

Explanation:

4 0
2 years ago
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