a 3.0 l reaction vessel contains 0.0060 moles of n2o5, 3.4 moles of no2, and 3.7 moles of o2. the mixture is approaching the following equilibrium: 2\text{ }\!\!~\!\!\text{ }{{\text{n}} {2}}{{\text{o}} {5}}(\text{g)}\rightleftharpoons 4\text{ }\!\!~\!\!\text{ n}{{\text{o}} {2}}\text{ }\!\!~\!\!\text{ (g) }\!\!~\!\!\text{ }\!\!~\!\!\text{ }{{\text{o}} {2}}(\text{g)} answer the following two questions: