Question

If equal masses of the following substances aborb the same amount of heat which will experience...

If equal masses of the following substances aborb the same amount of heat which will experience the most significant change of temperature?

Answer choices:

SiO2(s)

NaCl(s)

H2O(l)

N2(g)

Cu(s)

Homework Answers

Answer #1

We know that Q = mcdt

Where

Q = amount of heat absorbed

m = mass of the substance

c = specific heat capacity of substance

dt = change in temperature

As Q and m are same dt is inversely proportional to c

So dt will be more if c is less

The c values are as follows :

SiO2(s) ---1.0 J/g-K

NaCl(s) ---- 0.864 J/g-K

H2O(l)   ---- 4.184 J/g-K

N2(g)    ---- 1.040 J/g-K

Cu(s) ---- 0.386 J/g-K

Since the value of c is less for copper it will experience the most significant change of temperature

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