A 50.0-cm³ chamber is filled with argon gas to a pressure of 20.3 Pa at a temperature of 0°C. All but a negligible number of these atoms are initially in their ground states. A flash tube surrounding the sample energizes 1.0% of the atoms into the same excited state having a mean life of 1.4 × 10^-8 s. What is the maximum rate at which photons are subsequently emitted by the gas (of course, it falls off with time)? Assume both that spontaneous emission is the only mechanism at work and that the medium is an ideal gas.