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A hot, just-minted copper coin is placed in 101 g of water to cool. The
water temperature changes by 8.39°C and the temperature of the coin
changes by 68.0°C. What is the mass of the coin? Disregard any energy
transfer to the water's surroundings.

Sagot :

Nahnah2240

Answer:the specific heat is the measure of how much heat per unfit mass required to raise the temperature by 1 degrees Celsius.the formula is given as Q= cm T where

Q= the amount of heat added

C= specific heat of a substance

T= change in temperature in degrees Celsius

Q=(4186 j/kg degrees Celsius (.109 kg) (8.93- degrees Celsius)=4974.53J

Explanation:

samueladesida43

The mass of the copper coin placed in 101g of water is 135.3g.

COLORIMETER:

The mass of the copper coin can be calculated using the following expression:

Since; Q = mc∆T

Where;

  • Q = heat absorbed or released
  • m = mass of substance
  • c = specific heat capacity of substance
  • ∆T = change in temperature

mc∆T (water) = mc∆T (copper)

According to this question;

COPPER METAL:

  • m = ?
  • c = 0.385 J/g°C
  • ∆T = 68°C

WATER:

  • m = 101g
  • c = 4.18 J/g°C
  • ∆T = 8.39°C

101 × 4.18 × 8.39 = (0.385 × m × 68)

3542.09 = 26.18m

m = 3542.09 ÷ 26.18

m = 135.3g

Therefore, the mass of the copper coin placed in 101g of water is 135.3g.

Learn more about specific heat at: https://brainly.com/question/1209542

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