Problem 14
A pressure of 0.887 atm equals how many pascals?
Problem 15
On the surface of Venus, the atmospheric pressure is \(91.8 \mathrm{~atm}\), and the temperature is \(460^{\circ} \mathrm{C}\). What is the density of \(\mathrm{CO}_{2}\) under these conditions? (The Venusian atmosphere is composed largely of \(\mathrm{CO}_{2}\).)
Problem 15
A gas has an initial volume of \(655 \mathrm{~mL}\) and an initial temperature of \(295 \mathrm{~K}\). What is its new temperature if volume is changed to \(577 \mathrm{~mL}\) ? Assume pressure and amount are held constant.
Problem 15
In a container, 4.56 atm of \(\mathrm{F}_{2}\) is combined with 2.66 atm of \(\mathrm{Cl}_{2}\). What is the mole fraction of each component?
Problem 15
How many liters of \(\mathrm{CO}_{2}\) at STP are produced from \(100.0 \mathrm{~g}\) of \(\mathrm{C}_{8} \mathrm{H}_{18}\), the approximate formula of gasoline? \(2 \mathrm{C}_{8} \mathrm{H}_{18}(\ell)+25 \mathrm{O}_{2}(\mathrm{~g}) \rightarrow 16 \mathrm{CO}_{2}(\mathrm{~g})+18 \mathrm{H}_{2} \mathrm{O}(\ell)\)
Problem 16
In a container, 77.3 atm of \(\mathrm{SiF}_{4}\) are mixed with \(33.9 \mathrm{~atm}\) of \(\mathrm{O}_{2}\). What is the mole fraction of each component?
Problem 16
On the surface of Mars, the atmospheric pressure is 4.50 torr, and the temperature is \(-87^{\circ} \mathrm{C}\). What is the density of \(\mathrm{CO}_{2}\) under these conditions? (The Martian atmosphere, similar to its Venusian counterpart, is composed largely of \(\mathrm{CO}_{2}\).)
Problem 16
How many liters of \(\mathrm{O}_{2}\) at STP are required to burn \(3.77 \mathrm{~g}\) of butane from a disposable lighter? \(2 \mathrm{C}_{4} \mathrm{H}_{10}(\mathrm{~g})+13 \mathrm{O}_{2}(\mathrm{~g}) \rightarrow 8 \mathrm{CO}_{2}(\mathrm{~g})+10 \mathrm{H}_{2} \mathrm{O}(\ell)\)
Problem 16
A gas has an initial volume of \(14.98 \mathrm{~L}\) and an initial temperature of \(238 \mathrm{~K}\). What is its new temperature if volume is changed to \(12.33 \mathrm{~L}\) ? Assume pressure and amount are held constant.
Problem 17
\(\mathrm{HNO}_{3}\) reacts with iron metal according to \(\mathrm{Fe}(\mathrm{s})+2 \mathrm{HNO}_{3}(\mathrm{aq}) \rightarrow \mathrm{Fe}\left(\mathrm{NO}_{3}\right)_{2}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{~g})\) In a reaction vessel, \(23.8 \mathrm{~g}\) of Fe are reacted but only \(446 \mathrm{~mL}\) of \(\mathrm{H}_{2}\) are collected over water at \(25^{\circ} \mathrm{C}\) and a pressure of 733 torr. What is the percent yield of the reaction?
