题目

将4 mol SO3气体和4 mol NO置于2 L容器中，在一定条件下发生如下可逆反应（不考虑NO2和N2O4之间的相互转化）： 2SO3（g）2SO2+O2；2NO+O22NO2。 （1）当上述系统达到平衡时，O2和NO2的物质的量分别为n（O2）=0.1 mol、n（NO2）=3.6 mol，则此时SO3气体的物质的量是多少？（写出计算过程） （2）当上述系统达到平衡时，欲求其混合气体的平衡组成，则至少需要知道两种气体的平衡浓度，但这两种气体不能同时是SO3和______,或NO和________（填分子式）。 （3）若在另外一个2For many years, Hawaii has been a magic name to people who like to travel. People on both sides of the Pacific Ocean, in Japan and in America, dream of seeing these beautiful islands in the middle of the ocean. Their dreams always include at least one scene of a sunset over the ocean. In the tropical(热带的) lands, the sun drops, like a ball of golden fire, into the sea, and it droops so quickly that you can almost see it move. The sun leaves behind a glow that lights the skies and shines in the quiet water. People often have a quiet, peaceful time ---perfect for a leisurely(悠闲的) walk along the water. This scene is not too different from the dramatic(令人神往的) beauty that greeted the first strangers to these islands centuries ago. They were Polynesian people who came from Tahiti in canoes not much bigger than small boats.They found the beautiful white sand beaches and the waving palm trees, but there were no giant hotels like the ones we see nowadays. The first people came to Hawaii nearly two thousand years ago, but skyscraper hotels were only built in the last 25 years. Now jet planes make it possible to fly to for a weekend from Tokyo. Wherever the people come from, they really want to see the original beauty of Hawaii. They want to see the lovely beaches and the mountain called Diamond Head which is almost hidden by the tall hotels.1.Hawaii is a name _____.A.given by people who like to travelB.attracting a lot of travelersC.with a magic story behind itD.liked by both the Japanese and Americans2.On these beautiful islands, one thing that every traveler won't miss is_____.A.to swim in the quiet waterB.to see the tropical plantsC.to see the sunsetD.a leisurely walk along the beach3.Which of the following does not belong to "the original beauty of Hawaii"?A.White sand beaches.B.Waving palm trees.C.Tall hotels.D.The Diamond Head Mountain.4.The last paragraph suggests_______A.the scenery nowadays is not too different from the original beauty.B.it's not quite easy to see the original beauty, because some of the scenery is almost hidden by tall hotels.C.it is easy to see the original beauty, but only by taking jet airplanes.D.it is not easy to see the original beauty because things have completely changed in the last 25 years.5.The best title of the passage is _______A.Islands Scenery.B.Hawaii A Magic Name.C.Traveling In Hawaii.D.The Dramatic Beauty.