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Tanya [424]
3 years ago
12

An iron ore contains 39% Fe2O3 by mass. What is the maximum mass of iron that can be recovered from 13.2 kg of this ore?

Chemistry
1 answer:
Mars2501 [29]3 years ago
6 0

Answer:

3.6036

Explanation:

0.39 * 13.2 = 5.148

5.148 * 0.7 = 3.6036

Fe2O3 = 0.7

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"What is the change of entropy for 3.0 kg of water when the 3.0 kg of water is changed to ice at 0"
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Q: What is the change of entropy for 3.0 kg of water when the 3.0 kg of water is changed to ice at 0 °C? (Lf = 3.34 x 105 J/kg)

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-3670.33 J/K

Explanation:

Entropy: This can be defined as the degree of randomness or disorderliness of a substance. The S.I unit of Entropy is J/K.

Mathematically,  change of Entropy can be expressed as,

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But T = 0 °C = (0+273) K = 273 K.

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