Problem 99
The inner vessel of a calorimeter contains \(2.50 \times 10^{2} \mathrm{g}\) of
tetrachloromethane, \(\mathrm{CCl}_{4},\) at \(40.00^{\circ} \mathrm{C} .\) The
vessel is surrounded by \(2.00 \mathrm{kg}\) of water at $18.00^{\circ}
\mathrm{C} .\( After a time, the \)\mathrm{CCl}_{4}$ and the water reach the
equilibrium temperature of \(18.54^{\circ} \mathrm{C} .\) What is the specific
heat of \(\mathrm{CCl}_{4} ?\)
Problem 100
On a very hot summer day, Daphne is off to the park for a picnic. She puts \(0.10 \mathrm{kg}\) of ice at \(0^{\circ} \mathrm{C}\) in a thermos and then adds a grape-flavored drink, which she has mixed from a powder using room temperature water \(\left(25^{\circ} \mathrm{C}\right) .\) How much grape- flavored drink will just melt all the ice?
Problem 101
It requires \(17.10 \mathrm{kJ}\) to melt \(1.00 \times 10^{2} \mathrm{g}\) of
urethane $\left[\mathrm{CO}_{2}\left(\mathrm{NH}_{2}\right) \mathrm{C}_{2}
\mathrm{H}_{5}\right]\( at \)48.7^{\circ} \mathrm{C} .$ What is the latent heat
of fusion of urethane in \(\mathrm{kJ} / \mathrm{mol} ?\)
Problem 102
A 20.0 -g lead bullet leaves a rifle at a temperature of $47.0^{\circ}
\mathrm{C}\( and travels at a velocity of \)5.00 \times 10^{2} \mathrm{m} /
\mathrm{s}\( until it hits a large block of ice at \)0^{\circ} \mathrm{C}$ and
comes to rest within it. How much ice will melt?
