Chapter 9: Q7 E (page 506)
Canadian tire pressure gauges are marked in units of kilopascals. What reading on such a gauge corresponds to 32 psi?
The gauge corresponds to 32 psi at 220.63Kpa.
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If the volume of a fixed amount of a gas is tripled at constant temperature, what happens to the pressure?
Question:A 1-L sample of CO initially at STP is heated to 5460C, and its volume is increased to 2-L. (a) What effect do these changes have on the number of collisions of the molecules of the gas per unit area of the container wall? (b) What is the effect on the average kinetic energy of the molecules? (c) What is the effect on the root mean square speed of the molecules?
A litre of methane gas, \({\rm{C}}{{\rm{H}}_4}\), at STP contains more atoms of hydrogen than does a litre of pure hydrogen gas, \({{\rm{H}}_2}\), at STP. Using Avogadro's law as a starting point, explain why.
Explain how the volume of the bubbles exhausted by a scuba diver ( Figure 9.6 ) change as they rise to the surface, assuming that they remain intact.
As \(1\;{\rm{g}}\)of the radioactive element radium decays over \(1\;\) year, it produces \(1.16 \times {10^{18}}\) alpha particles (helium nuclei). Each alpha particle becomes an atom of helium gas. What is the pressure in pascal of the helium gas produced if it occupies a volume of \(125\;{\rm{mL}}\)at a temperature of \({25^\circ }{\rm{C}}\) ?
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