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120.0J of energy are added to a sample of air with unknown mass. The sample increases its temperature from 33.2°C to 45.0°C. What is the mass of the air sample? (c=1.0 J/g°C)

Respuesta :

kenmyna
The mass of the air  sample  is calculated using  the below

Q(heat)=M(mass) x C(specific heat capacity) x delta T(change  in temperature)

Q= 120.j
M=?
C= 1.0j/g/c
delta T =45.0-33.2=11.8 c
by making M the subject of the formula

M=Q/C delta T

  = 120 j/ 1.0 j/g/c x11.8 c=10.17 grams

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