contestada

2. Calculate the energy transferred when raising the temperature of 16 kg
of water by 3°C (c = 4,186 J/kg . K).
a. 785 J
c. 1.26 < 10J
b. 2.2 kJ
d. 2.0 x 105 J

Respuesta :

GoCG
The answer would be “a”
Lanuel

The quantity of energy transferred is equal to 18,485,376 Joules.

Given the following data:

  • Mass of water = 16 kg
  • Specific heat capacity of water = c = 4186 J/kgK
  • Temperature = 3°C

Conversion:

Temperature = 3°C to Kelvin = [tex]273+3=276\;K[/tex]

To calculate the quantity of energy transferred:

Mathematically, quantity of energy is given by the formula;

[tex]Q = mct[/tex]

Where:

  • Q represents the quantity of energy.
  • m represents the mass of an object.
  • c represents the specific heat capacity.
  • t represents the temperature.

Substituting the given parameters into the formula, we have;

[tex]Q = 16\times 4186 \times 276[/tex]

Quantity of energy, Q = 18,485,376 Joules

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