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Zarrin [17]
3 years ago
14

Why is melting point considered a physical property

Chemistry
1 answer:
miskamm [114]3 years ago
6 0

Answer:

Because you can physically see the object melting when it comes to the melting point. The objects texture, color, temperature, shape, and state of matter (solid, liquid, gas) are possibly changing.

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Which of the following best explains why solids do not change
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Unless otherwise instructed, you may refer to the periodic table in the Chemistry: Problems and Solutions book for this question
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2 years ago
The kilogram is the SI unit for mass
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3 years ago
Read 2 more answers
2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(s) T
brilliants [131]

Answer:

ΔHrxn = [(1) -1675.5 ( kJ/mole) + (2) 0 ( kJ/mole)] - [(1) -824.3 ( kJ/mole) + (2) 0 ( kJ/mole)]

Explanation:

ΔHrxn = 2ΔHf (Al₂O₃)  - ΔHf (Fe₂O₃)

Remember that for pure elements in their standard state of temperature and pressure by definition their standard heats of formation are zero.

ΔHrxn = 2(-1675.7) - (-824.3) kJ/mol

ΔHrxn = 2527 kJ/mol

6 0
3 years ago
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