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The following mechanism has been proposed for the decomposition of ozone in the atmosphere. Step 1 O3 O2 + O Step 2 O + O3 2O2 (the reverse reaction is negligibly slow) Use the steady state approximation, with O treated as the intermediate, to find an expression for the rate of decomposition of O3, i.e. -d(O3)/dt. (Note, do not set d(O3)/dt equal to zero). When step 2 is slow, the rate of decomposition of ozone reduces to a. k1[O3] b. k1k-1/ k2 [O2] c. k1k2[O3]^2 / k-1 [O2] d. k2[O3] Enter the letter of the correct selection.
If 72.4 kJ of heat is supplied to a 842 g block of metal, the temperature of the metal increases by 9.0°C. Calculate the specific heat capacity of the metal in J/g·°C.
In an experiment, 1.00g of CaCo3 was placed in a 0.500-L container, and when it was heated to a constant temperature, 50% of the solid decomposed. What is the value of Kc for this reaction under these conditions.
a 0.2200g sample of 99.35 pure copper wire is dissolved in concentrated nitric acid. after the addition of an excess of
How many grams are present in 1 gram of potassium-40. Its natural abundance is 0.0117% and its half life is 1.28X10^9 yrs
0.3 M NaH2PO4 calculate acidic and basic buffer capacity. How muc of strong base needed to bring buffer pH one unit up?
Consider a process carried out on 1.00 mol of a monatomic ideal gas by the following pathway from state A to state B
When Cl2 is used as water disinfectant, the following reactions should be used to determine the concentration of different species.
A pitcher containing .9 L of water at 3 degrees celceus is removed from the fridge. How many kilojoules are needed to warm the water to a room temperature of 35 degrees celceus
For groups (a) and (b) below, identify the best oxidizing and the best reducing agent in each group. You should have one oxidizing and one reducing agent (species) for a, and one of each for b. Assume the reaction as written
how many grams of water can be heated from 25 degrees c to 100degrees c by the heat released from converting 49.7 g of
Technetium-99m is used for radioisotope-guided surgical biopsies of certain bone cancers. A patient must receive an injection of 28mCi of technetium-99m 6-12 hours before surgery.
Calculate the pH of each of the following solutions. (a) 0.115 M HONH2 (Kb = 1.1 10-8) (b) 0.115 M HONH3Cl
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