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Sophie [7]
3 years ago
13

How much energy is needed to melt 47.6g of water

Chemistry
1 answer:
Rasek [7]3 years ago
5 0

Answer:

15.9 kJ

Explanation:

Use the equation q = nΔH

q = (47.6)(334)

q = 15898.4 J

or 15.9 kJ

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Realice las siguientes conversiones: a) 72°F a °C, b) 213.8°C a °F, c)180°C a K, d) 315K a °F, e) 1750°F a K, f) 0K a °F.
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Answer:

a) 72 °F= 22.22 °C

b)  213.8 °C=  416.84°F

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Explanation:

Para realizar el intercambio de unidades debes tener en cuenta las siguientes conversiones:

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  • Celsius a Fahrenheit: °F= °C*1.8 + 32
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Entonces se obtiene:

a) 72 °F= \frac{72-32}{1.8}=22.22 °C

b)  213.8 °C= 213.8*1.8 + 32= 416.84°F

c) 180 °C= 180°C + 273.15= 453.15 °K

d) 315 °K= (315 -273.15)*1.8 + 32= 107.33 °F

e) 1750 °F= \frac{1750-32}{1.8} + 273.15= 1227.594 °K

f) 0 °K= (0 -273.15)*1.8 + 32= -459.67 °F

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