[单选题]
09.15: An ideal gas in a closed container of volume 6.0 L is at a te hk: p6+25viymlgdfc9;f;4z 1m-qivqgvb2qcx-8 kcs mperature of 4z q 8v; xc qsgi-1mq2kv-fbc;$100^{\circ}C$. If the pressure of the gas is 2.5 atm, how many moles of gas are in the container?