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natima [27]
3 years ago
13

2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(s) T

Chemistry
1 answer:
brilliants [131]3 years ago
6 0

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

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vovangra [49]

Answer:

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3 years ago
1. A rock with a mass of 66.5g<br>occupies 23.0 cm. Density?​
telo118 [61]

Answer:

2.89 g/cm^3

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3 years ago
For the reaction, Cl2 + 2KBr --&gt; 2KCl + Br2, how many moles of potassium chloride, KCl, are produced from 102g of potassium b
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Solution :

From the balanced chemical equation, we can say that 1 moles of KBr will produce 1 moles of KCl .

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Mass of KCl produced :

m = 0.86 \times Molar \  mass \ of \  KCl\\\\m = 0.86 \times 74.5 \ gram \\\\m = 64.07\  gram

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3 years ago
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Answer:

Hey mate.......

Explanation:

This is ur answer......

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