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Grace [21]
4 years ago
15

How can you classify matter

Chemistry
1 answer:
Nastasia [14]4 years ago
6 0
By its mass
...........
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____ is the process in which energy is released as the nuclei of small atoms combine to form a larger nucleus
Ne4ueva [31]
It is called fusion. It is the process taking place on our sun, as two hydrogen atoms fuse together to form a helium atom and give off a small amount of energy <span>while losing some mass.</span>



Hope this satisfies your query! Have a good one :)
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4 years ago
Which best describes species C?
inysia [295]
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Ccl2f2 is considered to be environmentally safe and is used as a refrigerant. The heat of vaporization of ccl2f2 is 289 j/g. Wha
algol [13]

Answer:

52.08grams

Explanation:

Heat of fusion is the energy needed to transform solid water into liquid water. Hess's Law.

The temperature change Liquid water to Solid Ice. 20 degrees C --> 0 degrees C. is 20 degree C.

The heat needed for this  is =  4.184 J/(g*C) * (36 grams of water) * 20 degrees C =  3012 joules of energy.

Liquid water to solid water.

Heat of fusion of water is 335j/g = 6.02kJ/mol

The heat needed for this is 6.02 kJ/mol * 2 moles of water = 12.04 kJ = 12040 joules of energy.

Adding the  two energies, we have a total energy iof 15052 joules.

15052 joules = H(vap of CCl2F2) * grams of CCl2F2 needed = 289 J/g * x grams 15052 / 289 = 52.08 grams needed.

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Why do very few trees exist in a grassland ecosystem?
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<span>D. not enough precipitation is the answer</span>
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3. Is the following statement a fact, opinion or theory? Why?
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This is an opinion. The person believes that eggs are better than cereal for breakfast. When someone else might disagree with that and say that cereal is better then eggs for breakfast.
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