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Heat<br />

Heat Change<br />

Energy Supply, E = Pt<br />

Energy Receive, Q = mcθ<br />

http://www.one-school.net/notes.html<br />

Q = mcθ<br />

m = mass (kg)<br />

c = specific heat capacity (J kg -1 o C -1 )<br />

θ = temperature change ( o )<br />

Electric Heater Mixing 2 Liquid<br />

Energy Supply, E = Energy Receive, Q<br />

Pt = mcθ<br />

E = electrical Energy (J or Nm)<br />

P = Power of the electric heater (W)<br />

t = time (in second) (s)<br />

Q = Heat Change (J or Nm)<br />

m = mass (kg)<br />

c = specific heat capacity (J kg -1 o C -1 )<br />

θ = temperature change ( o )<br />

Specific Latent Heat<br />

Boyle’s Law<br />

(Requirement: Temperature in constant)<br />

Pressure Law<br />

(Requirement: Volume is constant)<br />

14<br />

ONE-SCHOOL.NET<br />

Heat Gain by Liquid 1 = Heat Loss by Liquid 2<br />

mcθ = mcθ<br />

1 1 1 2 2 2<br />

m1 = mass of liquid 1<br />

c1 = specific heat capacity of liquid 1<br />

θ1 = temperature change of liquid 1<br />

m2 = mass of liquid 2<br />

c2 = specific heat capacity of liquid 2<br />

θ2 = temperature change of liquid 2<br />

Q = mL<br />

Q = Heat Change (J or Nm)<br />

m = mass (kg)<br />

L = specific latent heat (J kg -1 )<br />

PV 1 1= PV 2 2<br />

P P<br />

=<br />

T T<br />

1 2<br />

1 2

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