A 10-gram aluminum cube absorbs 677 joules when its temperature is increased from 50°c to 125°
c. what is the specific heat of aluminum? express the answer to the hundredths place

Respuesta :

0.90 is the correct answer

Answer : The specific heat of aluminum is, [tex]0.90J/g^oC[/tex]

Solution : Given,

Heat absorbs  = 677 J

Mass of the substance = 10 g

Final temperature = [tex]125^oC[/tex]

Initial temperature = [tex]50^oC[/tex]

Formula used :

[tex]Q= m\times c\times \Delta T[/tex]

or,

[tex]Q= m\times c\times (T_{final}-T_{initial})[/tex]

Q = heat absorbs

m = mass of the substance

c = heat capacity of aluminium

[tex]T_{final}[/tex] = final temperature

 [tex]T_{initial}[/tex] = initial temperature

Now put all the given values in the above formula, we get the specific heat of aluminium.

[tex]677g= (10g)\times c\times (125-50)^oC[/tex]

[tex]c=0.9026J/g^oC=0.90J/g^oC[/tex]

Therefore, the specific heat of aluminum is, [tex]0.90J/g^oC[/tex]