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shusha [124]
2 years ago
12

How much energy is required to completely melt a 250 gram ice cube that is already at 0 degrees Celsius? Show your work & un

its. Expected Answer = 83,500 J

Chemistry
1 answer:
patriot [66]2 years ago
7 0

Answer:

Q = 83500J

Explanation:

Q = L_{ice} *m

L_{ice} = 3.34*10^{5} \frac{J}{kg}

m = 250g = 0.25kg

Q = (3.34*10^{5} \frac{J}{kg})*(0.25kg)

Q = 83500J

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saveliy_v [14]

Answer A) : We have to calculate the number of moles of Benzene involved in the reaction,

30 g / 78 moles of benzene = 0.384 moles


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65 g / 159.8 moles = 0.406 moles


By observing the reaction given above we can say that the reaction ratio of bromine and benzene is 1 : 1


We need to find the mass of bromobenzene,

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Answer B) : To calculate the actual yield we have to divide it with theoretical yield.


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gulaghasi [49]
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2 years ago
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