The reaction 2NO2 - 2NO + 02 obeys the rate law: rate = 1.4 x 102(No21? at 500 K. What would be the rate constant at 322 K if the activation energy is 80. kJ/mol? This is a second order reaction, giving k the units of M1s1 This will not change with the change in temperature. Do not include units in your answer. Exponential numbers need to be entered like this: 2 E-1 means 2 x 101. The rate constant, k, at 322 K equals:

(2) Draw the (right next splitting patterns to with each for a all unique It's in chemical environment). the molecules below

If the denisty of Platnuim is 19.32 g/cm3 what could the dimnesions of a cube be that weighted 1.00 kilogram.

A A Monate ab 4 Paragraph Help Search (Alt+Q) No Spacing Heading 1 Editing Dictate Sensitivity Voice Sensitwity Styles Two methods of separating an undissolved solid from a liquid are and The method for separating a dissolved solid from the water in an aqueous solution 15 • Using a solvent to dissolve only one substance in a mixture is called 2. A mixture can consist of two or more pure substances. Does that mean a mixture can only consist of elements? 3. Explain your answer to question number 2 4. Oil and water mixed together form a heterogenous or homogenous mixture? 5. 2.000 g of the unknown mixture was placed in an evaporating dish. The empty evaporating dish weighs 38.135 g. After subliming the ammonium chloride from the mixture, the evaporating dish and the remaining mixture weighs 39.775 g. (Put your answer in 3 sig figs and show your work) • What is the weight of the ammonium chloride? • What is the percent of ammonium chloride in the sample? Normal 1. Fill in the following…

The world population is estimated to be 7.4 x 109. Nauru is the smallest island nation and comprises 1.5 x 10-4% of the world population. If the percentage of left-handed people is approximately 12%, estimate the number of left-handers on the island of Nauru.