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Polyaromatic hydrocarbons are commonly associated with soot particles, as adsorbances on the surface. Calculate the relative and actual surface areas (actual values in m2/g) of soot particles (?=0.6g/mL) having diameters of 20µm and 2µm, respectively, assuming that the particles are spheres. Speculate on the health implications with regard to human intake of PAH compounds.
According the Michaelis-Menten mechanism, the dependence of enzymatic reaction rates on substrate concentration [S] is Answer A. zero order at low [S] and first order at high [S] B. first order in [S] as long as substrate is at saturating concentr..
in a reaction 8200 g of sodium reacts with 74.00 g of ferric oxide to form sodium oxide and iron metal. calculate the
find the methylmercury CH3Hg concentration in fish at which regular consuption at 50g/day becomes unacceptable health risk. use epa reference dose for methylmercury
If 6.06 L of O2 gas is collected over water at 250C (vapor pressure = 23.8 torr) and a barometric pressure of 702 torr, what is the mass of H2O2 (MM = 34.02 g/mole) decomposed?
A gas sample has an original volume of 580 ml when collected at 1.20 atm and 22°C. If a change is made in the gas pressure which causes the volume of the gas sample to become 1.45 liters at 40°C, what is the new pressure
if the initial pressure of nh3gnbspis 7.845 atmcalculate the of nh3gnbspleft over after the reaction reaches
Assume that the octet rule is followed for the N atom when you draw your structure(s). Pick the correct statement from the choices below.
55 gallon drum weighs 75.0 lb. when empty. what will it weigh when it is filled with ethanol which has a density of
The endpoint corresponds to the equivalence point. D. At the equivalence point the amount of reagent added does not yet equal to the amount of analyte present
To a solution containing both acetic acid and sodium acetate, HCl is added. Beside hydroxide ions, which species will react with the extra protons from HCl to keep the pH from changing
A sample of gas is compressed from 13.01 L to 4.27 L using a constant external pressure of 3.63 atm. At the same time, 1,453 J of heat flows into the surroundings. What is the internal energy change for the gas
Assuming that the combustion of palmitic acid gives off 10126.9 kJ/mol what is the maximum number of ATP molecules that can be generated from ADP and Pi, by combusting one palmitic acid molecule?
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