Respuesta :

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Specific heat of water, C = 4.18 J/g. °C
From question, Mass of water= 7g
Temperature difference = 180 degree Celsius

We know by formula,
Heat (Q)= c* m(mass) * T (change in temperature)
 So, Q= 4.18 J/g. °C *7g * 180 °C
         =5266.8 J

     

Answer : Heat, Q = 526.68 J

Explanation :

Given that,

The mass of water, m = 7 g

Change in temperature, [tex]\Delta T=18\ ^0C[/tex]

Heat required to raise the temperature is given by :

[tex]Q=mc\Delta T[/tex]

Where,

c is the specific heat of the water

For water, [tex]c=4.18\ J/g\ ^0C[/tex]

So, [tex]Q=7\ g\times 4.18\ J/g\ ^0C\times 18^0C[/tex]

[tex]Q=526.68\ J[/tex]

So, heat needed to raise the temperature of 7g of water by [tex]18\ ^0C[/tex] is 526.68 J

Hence, this is the required solution.

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