You are walking on a beach and find a mystery piece of metal. You take it back to your lab and measure its mass to be 0.5 kg. In order to heat the metal 1 degree K, you must add 115 J of heat. Identify the metal. q =mCΔT
For the given question above, I think there is a choice of answers accompanied with the question. Based on my research, the choices are:
A. Brass
B. Copper
C. Platinum
D. Silver
The answer for the question is option D. Silver.
Specific heat = 15 J / 0.5 kg
= 230 J kg-1
Substance Specific Heat (J kg-1 K-1)
Aluminum 900
Copper 390
Brass 380
Silver 230
Platinum 130
Answer:
Metal : silver
Explanation:
It is given that,
Mass of the metal, m = 0.5 kg
Temperature, \(\Delta T=1\ ^0\ K\)
Heat, Q = 115 J
Heat absorbed is given by :
\(Q=mc\Delta T\)
\(c=\dfrac{Q}{m\Delta T}\)
Where,
c is the specific heat of the metal
\(c=\dfrac{115\ J}{0.5\times 1\ ^0K}\)
\(c=230\ J/kg\ ^0K\)
The metal having specific heat equals 230 J/kg °K is silver
Hence, this is the required solution.