Problem 74
A liquid is placed in a 25.0-L flask. At \(140{ }^{\circ} \mathrm{C}\), the liquid evaporates completely to give a pressure of \(0.900 \mathrm{~atm}\). If the flask can withstand pressures up to \(1.30 \mathrm{~atm}\), calculate the maximum temperature to which the gas can be heated without breaking the flask.
Problem 76
As seen in Chapter 1, one teragram \((\mathrm{Tg})\) is equal to \(10^{12} \mathrm{~g} .\) In \(2000, \mathrm{CO}_{2}\) emissions from fuels used for transportation in the United States was \(1990 \mathrm{Tg}\). In 2020, it is estimated that \(\mathrm{CO}_{2}\) emissions from the fuels used for transportation in the United States will be \(2760 \mathrm{Tg}\). a. Calculate the number of kilograms of \(\mathrm{CO}_{2}\) emitted in the years 2000 and 2020 . b. Calculate the number of moles of \(\mathrm{CO}_{2}\) emitted in the years 2000 and \(2020 .\) c. What is the increase, in megagrams, for the \(\mathrm{CO}_{2}\) emissions between the years 2000 and \(2020 ?\)
