How many calories of heat are required to heat each of the following from 15 degrees C to 65 degrees C?

Question

a. 5.0g Pyrex® glass (specific heat capacity = 0.20 cal/g•K)

b. 20g platinum (specific heat capacity = 0.032 cal/g•K)

c. 1.0g water (specific heat capacity = 1.00 cal/g•K)

Answer 1

b. 32cal/*k

Answer 2

Use always formula

Q= mcdT
m mass ;c specific heat capacity; dT change of temperature

So here you have for all problems dT = 65-15=50°

a) Q = 5*0.2*50 =50cal

b) Q = 20*0.032*50 =32 cal

c) = 1*1*50= 50 cal

Answer 3

a. 50
b. 3.2
c. 50