A 15.5 g piece of chromium, heated to 100.0 degrees Celsius, is dropped into 55.5 g of water at 16.5 degrees Celsius. The final temperature of the metal and the water is 18.9 degrees Celsius. What is the specific heat capacity of chromium

Respuesta :

Answer: The specific heat capacity of chromium is [tex]2010J/g^0C[/tex]

Explanation:

[tex]heat_{absorbed}=heat_{released}[/tex]

As we know that,  

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

[tex]m_1\times c_1\times (T_{final}-T_1)=-[m_2\times c_2\times (T_{final}-T_2)][/tex]         .................(1)

where,

q = heat absorbed or released

[tex]m_1[/tex] = mass of chromium = 15.5 g

[tex]m_2[/tex] = mass of water = 55.5 g

[tex]T_{final}[/tex] = final temperature =[tex]18.9^0C[/tex]

[tex]T_1[/tex] = temperature of chromium = [tex]100^oC[/tex]

[tex]T_2[/tex] = temperature of water = [tex]16.50^oC[/tex]

[tex]c_1[/tex] = specific heat of chromium= ?

[tex]c_2[/tex] = specific heat of water= [tex]4.184J/g^0C[/tex]

Now put all the given values in equation (1), we get

[tex]-15.5\times c_1\times (19.5-18.9)=[55.5\times 4.184\times (19.5-100)][/tex]

[tex]c_1=2010J/g^0C[/tex]

The specific heat capacity of chromium is [tex]2010J/g^0C[/tex]

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