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ozzi
4 years ago
11

Choose all the answers that apply.

Chemistry
2 answers:
vovikov84 [41]4 years ago
5 0
I think the answer is 5
liberstina [14]4 years ago
5 0
The answer for this is idk bro like tbh I suck at math
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Find the energy required to melt the copper once it's reached the melting point.
belka [17]
The answer has to depend on the mass of the copper that you're trying to melt. 

But there is a formula which you can calculate the energy required if you have the information of the mass. This formula requires the value called specific latent heat of fusion, which is the energy required to melt or freeze a specific mass of copper without changing its temperature but change its state. 
E = m l_{f}
E is the total energy required, m is the mass, and lv is the specific latent heat of fusion of copper. 

Usually, in questions, lv is given. But we can also look it up online which is around 205kJ kg^-1 
this means, to melt or freeze a copper, we need to work the mass multiplied by 205kJ in order to calculate its total energy needed or released. 
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3 years ago
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bazaltina [42]

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Explanation:

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8 0
3 years ago
Which term names the main class of the chemical that makes up bread?
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Answer:

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