Question

"The International Space Station (ISS) will soon host the coldest spot in the entire universe, if everything goes according to plan. This August, NASA plans to launch to the ISS an experiment that will freeze atoms to only 1 billionth of a degree above absolute zero more than 100 million times colder than the far reaches of deep space, agency officials said. The instrument suite, which is about the size of an ice chest, is called the Cold Atom Laboratory (CAL). It consists of lasers, a vacuum chamber and an electromagnetic "knife" that together will slow down gas particles until they are almost motionless. (Remember that temperature is just a measurement of how _____ atoms and molecules are moving.)" Which of these violates the law of conservation of mass? (Circle the answer) 2H_2O_2 = 2H_2O + O_2 CH_4COOH = CH_4 + 2CO_2 2NO_2^- + O_2 = 2NO_3^- 1 mole of Ar is how many molecules of Ar? (Quantitative answer, or explicit, qualitative answers accepted) What is the rate law for this reaction: 2NO_2^- + O_2 = 2NO_3^- ? Do NOT assume this is an elementary reaction. If the initial rate of O_2 consumption is 5 M/s, what is the rate of production of NO_3^- ? In an experiment, you measure the concentration of NO_2 and N_2O_4 over time, and use the data to make this plot. What is the significance of the dashed line your instructor insisted you insert?

Answer 1