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The light-emitting decay of excited mercury atoms is first-order, with a rate constant of 1.65E6 1/s. A sample contains 5.2E-6 M of excited mercury atoms.
a) Find the time at which the concentration will be 4.5E-7 M.
b) Find the concentration after 2.5E-6 s.
n-butane vapor and liquid are in equilibrium (boiling) at 18.66 bars. Use the Peng-Robinson equation of state to determine the saturated liquid and saturated vapor molar volumes
Tell me if an induced current would exist, if you had a coil and a magnetic field that both were in motion at the same time.
A certain reaction with an activation energy of 185kj/mol was run at 455k and again at 475 . What is the ratio of f at the higher temperature of f at lower temperature? one significant figure
What is the percent yield in a reaction between 53.6 g O2 and 51.6 g Al if 87.3 g of Al2O3 is produced
what is the molarity of an NaOH solution if 25 mL of this solution reacts exactly with 22.3 mL of .253 molar sulfuric acid?
Find the molality of the solution. Find the molecular weight of the unknown compound please show steps
Problem- Suppose that the atomic mass unit (amu) had been defined as one-tenth of the average mass of an atom of sodium instead of one-twelfth of the mass of an atom of carbon-12.
If the sign contains neon at a pressure of 1.78 at 38, how many grams of neon are in the sign
the density of solutions are assumed to be the same as water. if the density of all 3 solutions was actually 1.1 gml
determine the errors if any with each galvanic cell set-up when the anode is on the left. select all that
A copper,(Cu(s) , electrode is immersed in a solution that is 1.00 M in ammonia,NH3 , and 1.00M in tetraamminecopper(II),[Cu(NH3)4]^2+ . If a standard hydrogen electrode is used as the cathode,
How many molecules of carbon dioxide are produced when 121 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water?
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