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If 508 nm is directly related to the d-orbital splitting Fe2+ o-phen complex, explain how this wavelength would change (become higher, lower, or stay the same) if we changed the reaction from using Fe2+ to Fe3+. Explain why the wavelength change occurs.
The calorimeter temperature rises 0.42°C. The calorimeter and water have a combined heat capacity of 32.16 kJ/K. Calculate the heat of formation of ammonia, ?H°f, in kJ/mol. The formation reaction for ammonia is: 0.5N2(g) + 1.5H2(g) ? NH3(g).
an electric power station annually burns 3.3 107 kg of coal containing 1.4 percent sulfur by mass. calculate the volume
although acetanilide and phenacetin are not appreciably acidic acetaminophen like aspirin is a stronger acid than
calculate the change in ph when 6 ml of 0.1 M HCl is added to 100 ml of a buffer solution that is 0.1 M in NH3 and 0.1 M in NH4Cl. And calculate the change in PH
A urine sample contains 46.5mgL-1 of ethanol. The density of ethanol is 0.79gcm-3. What is the concentration expressed as %v/v
If, in practice, 5.0 mL of 16.0 M nitric acid were added to effect the dissolution of the copper, what would be the minimum volume of 4.00 M NaOH required to neutralize the remaining acid and convert all of the Cu2+(aq) to Cu(OH)2(s)
If 230nm wavelength light were used instead still 75µm what changes would be there compared to part (a)? Looking at the number and the energy of the electron
Calculate pCO2+ at each of the following points in the titration of 25.00 mL of 0.02022 M CO2+ by 0.03855 M EDTA at pH 6.00.
A long copper wire of length has been shaped into a perfect ring of radius R. If the ring is now positively charged (total charge Q), what is the electric potential V in the very centre of the ring, in terms of Q and R ? What is the electric field st..
A little boy on the beach lets go of a He filled balloon which floats up into the sky. The balloon finally pops after reaching a height of 1250. m above the ground where the temperature is 18 °C and the pressure is only 0.860 atm.
The river has an ultimate CBOD of 10 mg/L as well as is flowing at a rate of 8 m3/s. Presumptuous a reaction-rate coefficient of 0.1/day, compute the ultimate and 5-day CBOD of the waste at the point of discharge (0 km) and 20 km downstream. The r..
Using the balanced equation of BaCl2 + 2AgNO3 => 2AgCl + Ba(NO3)2, answer the following questions: What mass of AgNO3, in grams, is required for complete reaction with 0.156 g of BaCl2? What mass of AgCl is produced?
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