Physics

Physics · thermodynamics

Problem

They are mixed in a calorimeter of equivalent in water

10 \mathrm{gr}, 100 \mathrm{gr}

of ice at

-10^{\circ} \mathrm{C}

with 200 gr of water at

80^{\circ} \mathrm{C}

. Calculate: a) The final temperature of the mixture. b) The amount of water steam at

100^{\circ} \mathrm{C}

that would have to be entered for the final temperature to be

90^{\circ} \mathrm{C}

. Data: - Specific heat of ice:

\quad c_{h}=0.5 \mathrm{cal} \cdot \mathrm{gr}^{-1} \cdot{ }^{\circ} \mathrm{C}^{-1}

- Latent heat of fusion:

\quad L_{f}=80 \mathrm{cal} / \mathrm{gr}

- Latent heat of vaporization:

540 \mathrm{cal} / \mathrm{gr}