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tester [92]
3 years ago
7

Which is true about the total mechanical energy in a closed system?

Chemistry
2 answers:
quester [9]3 years ago
4 0

Answer:

I believe that is C due to it being in a closed system

ryzh [129]3 years ago
3 0
It’s between C and B
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3 years ago
Which material does not melt at any temperature?
lord [1]

Answer: Option (c) is the correct answer.

Explanation:

Wood is a mixture of different substances. Primarily it consists of cellulose, lignin, water etc.

When we heat wood then all these substance oxidize into the atmosphere even before they could melt.

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6 0
3 years ago
A heat energy of 645 J is applied to a sample of glass with a mass of 28.4 g. Its temperature increases from –11.6 ∞C to 15.5 ∞C
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The heat that is required to raise the temperature of an object is calculated through the equation,
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Specific heat is therefore calculated through the equation below,
                                specific heat = heat / (mass x (T2 - T1))
Substituting,
                                specific heat = 645 J / ((28.4 g)(15.5 - - 11.6))
The value of specific heat from above equation is 0.838 J/g°C. 
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Ierofanga [76]

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