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ziro4ka [17]
3 years ago
9

The rate at which light energy is radiated from a source is measured in which of the following units? A. Candela B. Angstrom C.

Lumen D. Lux
Chemistry
2 answers:
svet-max [94.6K]3 years ago
6 0
The correct answer is Lumen
Bumek [7]3 years ago
5 0
A. Candela

Tell me if I got it wright
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Read 2 more answers
2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(s) T
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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)

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ΔHrxn = 2(-1675.7) - (-824.3) kJ/mol

ΔHrxn = 2527 kJ/mol

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