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Tell me a joke? U get 100 pints

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Amanda [17]

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Thepotemich [5.8K]

Given that the mass of coffee in the cup = 140 g

Final temperature = $20^{0}C$

Initial temperature = $75^{0}C$

Let us assume the specific heat of coffee is equal to that of water = 4.184 $\frac{J}{g^{0}C }$

Temperature change = T(final) - T(initial) = (20 - 75 ) $^{0}C$

=- 55 $^{0}C$

-Heat given out by coffee = heat absorbed by the surroundings

Heat released into the surroundings =-( $mC(T_{final}-T_{initial})$ )

= $-(140g)4.184\frac{J}{g^{0}C }( -55^{0}C)$

= 32,217 J

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4 years ago

meriva

Answer: sunlight, water, air, habitat, and food.

Explanation: we are all living organisms and we all have our five basic necessities for survival; sunlight, water, air, habitat, and food.

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3 years ago

-Dominant- [34]

Answer:

Explanation:

The law of conservation clearly states that energy can neither be created nor destroyed

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cestrela7 [59]

Answer:

Number3=Heat is absordedduring chemical reaction

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