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Nitric oxide (NO) is emitted at 150 g/s from a stack with a physical height of 90 m. The wind speed is 4.8 m/s on a slightly sunny morning and plume rise is 20 m. (a) Calculate the ground-level centerline concentration 2.0 km downwind from the stack. (b) Calculate the concentration at 100 m off the centerline at the same x distance.
Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing indium and cadmium:
A solution is prepared by mixing 50.0 mL of 0.20 M Pb(NO3)2 with 50.0 mL of 1.5 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. [Ksp for PbCl2(s) is 1.6 10-5.]
Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl(aq)
A hiker caught in a thunderstorm loses heat when her clothing becomes wet. She is packing emergency rations that, if completely metabolized, will release 30 kJ of heat per gram of rations consumed.
By what factor (The factor is the ratio of the rates) does the rate of this isomerization reaction increase as the temperature increases from 256 degree celsius to 297 degree celsius ?
A cylinder fitted with a piston contains 3.00 moles of He gas (ideal!) at P = 1 bar and is held in a large constant-temperature bath at 400 K. The pressure is reversibly increased to 5.00 bar.
what is the volume of the capillary tube and its associated error? What measurement must be made to a higher precision to decrease the error in the volume?
A sample containing both enantiomers is found to have an observed rotation of +0.87 degrees in a one dm tube at a concentration of 0.025 g/mL. What is the optical purity of the sample? What is the % of the dominant enantiomer in this sample?
If you have 240.0 mL of water at 25.00 °C and add 100.0 mL of water at 95.00 °C, what is the final temperature of the mixture.
When doing the kinetic trial, Peyton mistakenly omitted the starch solution from the kinetic trials. How will this omission change the appearance of the resultant solution (from mixing solutions A&B)
what is the mole fraction of magnesium chloride in a solution prepared by adding 15 grams of magnesium chloride
Given the following data table of average bond enthalpies, estimate the ΔH^rxn for the reactions 2H2+O2-- 2H2O. What is the hybridization of xenon in each of your Lewis resonance structures?
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