[单选题]
09.15: An ideal gas in a closed c43mrrp o;:2 l/ 5 x vwrnpypvvu.zxr7+:s 4jk3a;yny4ig5m a oontainer of volume 6.0 L is at a temperature of g5aaysoik 4y;j n4m:3 $100^{\circ}C$. If the pressure of the gas is 2.5 atm, how many moles of gas are in the container?