Au, Pt, Sn, Ag in that order.
q = mass x specific heat x delta T
Solve for specific heat or sp.h.
sp. h. = q/m*delta T
So for the same m and delta T, small sp.h. requires small q; large sp.h. require large q.
But you could think of an example and get the same result. If I heat 100 g H2O and stick my finger in the pot of water at the end of 10 seconds,do you think I will burn my finger? Probably not. If I heat a 100 gram piece of metal (like Fe, Sn, Au, etc) and touch my finger to it at the end of 10 seconds I can guarantee you I will have a blister on my finger. Water has a sp.h. of 4.184 J/gram while the metals are about 0.1 to 0.2 J/g. So small sp. h. materials heat up very fast with very little heat.
Which of the following substances could be heated from 20°C to 100°C most quickly? Assume identical heat sources are used on all substances.
Specific Heat (J/g degrees C)
Gold: 0.1291
Platinum: 0.1326
Silver: 0.2350
Tin: 0.2274
Can you please explain how you figured it out?
3 answers
Gold
A piece of copper (C=0.385 J/goC) has an initial temperature of 95oC. When the metal is placed in 79.1g of water that is at an initial temperature of 22.3oC, the temperature rises by 9.7oC. What is the mass of the metal? (Water has a specific heat of 4.18 J/goC) Round to 1 decimal place. No units in your final answer
1 answer