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rewona [7]
2 years ago
11

When the brakes are applied in a moving car, the car's kinetic energy

Chemistry
1 answer:
vodomira [7]2 years ago
3 0

Answer:B

Explanation:There you go

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This means that the steel bar lost 14900 J of thermal energy. What is the change in temperature of the steel bar? Recall that th
stiv31 [10]

Answer:

ΔT=-747,13°C

Explanation:

Sensible heat is<em> the amount of thermal energy that is required to change the temperature of an object</em>, the equation for calculating the heat change is  given by:

Q=msΔT

where:

  • Q, heat that has been absorbed or realeased by the substance [J]
  • m, mass of the substance [g]
  • s, specific heat capacity [J/g°C] (
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To solve the problem, we clear ΔT of the equation and then replace our data:

Q=msΔT

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ΔT=\frac{-14900 J}{40,7g*0,49\frac{J}{gC} }=-747,13°C

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Thus, the change in temperature of the steel bar is -747,13°C, meaning that the temperature of the bar decreases.

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Leviafan [203]

What is the question?

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Why would there be a concern with glaciers melting because of global warming?
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Answer:

Determine how many formula units are in 2.35 moles of lithium phosphite?

Explanation:

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