An object with a mass of $4 kg$ , temperature of $270 ^oC$ , and a specific heat of $25 J/(kg*K)$ is dropped into a container with $36 L$ of water at $0^oC$ . Does the water evaporate? If not, by how much does the water's temperature change?

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Answer 1 · 2017-08-30T11:03:10

Yes, the water evaporates.

According to principle of calorimetry,

$Q_o = Q_w$

$(mCDeltaT)_o=(mCDeltaT)_w$

$4xx25xx(270-T_f) = 36xx4.2xxT_f$

$rArr T_f ~~ 107.5^oC$

As $T_f>100^oC$ , the water evaporates

An object with a mass of 4 kg4 kg, temperature of 270 ^oC270 ^oC, and a specific heat of 25 J/(kg*K)25 J/(kg*K) is dropped into a container with 36 L 36 L of water at 0^oC 0^oC . Does the water evaporate? If not, by how much does the water's temperature change?