The specific heat of gold is 0.126 j/g°c. what mass of gold would change its temperature from 25.0 °c to 60.0 °c with the addition of 2825 j of heat energy? a 570 g b 641 g c 540 g d 610 g

The amount of heat energy needed to increase the temperature of a substance by  is given by:

where m is the mass of the substance, Cs is its specific heat capacity and  is the increase in temperature of the substance.

In this problem, we have a certain mass m of gold, with specific heat capacity , to which we add Q=2825 J of energy. Its temperature increases by . Therefore, if we re-arrange the previous equation, we can find the mass of the block of gold:

So, the correct answer is B.

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