Question #56574

Question

Question #56574

1 Answer

Impact of this question

8031 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-03-17T00:49:10

Specific heat is defined as $J / (K \cdot k g) or J \cdot K^{- 1} \cdot k g^{- 1}$ $J//(K*kg) or J*K^-1*kg^-1$
(=energy per degree per kilogram of mass)

So you just divide heat capacity of the object by the mass:

$c_{silver} = \frac{42.8 J / K}{0.181 k g} \approx 236 \frac{J}{K \cdot k g}$ $c_"silver"=(42.8J//K)/(0.181kg)~~236J/(K*kg)$

Extra :
Officially, specific heat is defined as the amount of energy needed to raise the temperature of $1 k g$ $1kg$ by $1 K$ $1K$ . Since a temperature difference of $1 K$ $1K$ is equal to one of $1^{o} C$ $1^oC$ this is no problem.
Since the SI-unit of mass is $k g$ $kg$ in stead of $g$ $g$ the official answer should be: $236 J / (K \cdot k g)$ $236J//(K*kg)$ or $236 J \cdot K^{- 1} \cdot k g^{- 1}$ $236J*K^-1*kg^-1$
But most people use the earlier notation of $J / g \cdot^{o} C$ $J//g*^oC$
which will turn out to be $0.236 J / g \cdot^{o} C$ $0.236J//g*^oC$

Science

Math

Humanities

... and beyond

Question #56574

1 Answer

Related questions

Impact of this question