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A lake with a cross sectional- area of 1km^2 and a depth of 125m has an euphotic zone that extends 15m below the surface what is the maximum weight of the biomass (in grams of carbon) that can be decomposed by aerobic bacteria in the water column of the lake below the euphotic zone during the summer when there is no circulation with the upper layer? The bacterial decomposition reaction is \((CH2O)n+nO2->nCO2+nH20\) THe solubility of oxygen in pure water saturated with air at 20 degree C is 8.9 mg/L.
the product for the following reaction between THF and excess HI, and provided a detailed step-bystep mechanism for its formation, using the curved arrow formalism
Calculate the grams of potassium iodate, KIO3 (FM 214.00) required to react with 25.0mL of a 0.0700M solution of sodium thiosulfate, Na2S2O3
The temperature of a sample of water increases by 6.5 degrees Celsius when 8.5 kilo Joules are applied. The specific heat of liquid water is 4.18 Joules per gram x degrees Celcius. What is the mass of the sample of water?
How many milliliters of 0.121 M H2SO4 are needed to neutralize 0.220g of NaOH? If 42.5mL of 0.220 M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of Ca(OH)2 must be in the solution?
What is the total work (in joules) in going from the initial to the final state by way of the preceding two steps? What would be the total work if the process were carried out reversibly?
Consider the unbalanced equation above. A sample of impure mercury(II) oxide is heated and the HgO decomposed completely. If 580. mL of O2 is collected by displacement of water at a barometric pressure of 790.0 mm Hg and 25.0°C,
unused lead nitrate to the container marked"sodium nitrate". What could the student do to get all the led ions out from the sodium nitrate?
In the qualitative cation analysis procedure, Bi3+ is detected by the appearance of a white precipitate of bismuthyl hydroxide, BiOOH(s): BiOOH(s) --->
Briefly explain why you can make the assumption that all of the SCN- ion in solutions S2-S6 has been converted to FeNCS^2+ ion.
students are advised to dispose of the 95% ethanol mother liquor from the recrystallization step n the nitration of bromobenzene in a waste bottle for halogented wastes while the same solvent used for the recrystallization
If an aqueous solution (solvent = water) is 0.5 molal in NaClO, what is the mole fraction of NaClO that is present? Hint: assume you have 1.00 kg of total solvent in your sample.
What is the molarity of a NaOH solution if 28.2 mL of a 0.112 M H2SO4 solution is required to neutralize a 25.0-mL sample of the NaOH solution?
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