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Consider a major oil spill in a lake( a prototyperelated to Alaska Oil Spill few years ago and many subsequentspills). Amount of oil spilled is 5.80 mega gram(Mg). We can assumeoil and water don't mix, so all oil floats on water because desityof the spilled oil is 0.796g/mL. The lenght and width of the lake affected are 265.0 miles and 9.18x10^5 yards. As an eviromental personnel, your job is to estimate thickness of the oil film (incm).
Oxygen at 150 K and 41.64 atm has a tabulated specific volume of 4.684 cm3/g and a specific internal energy of 1706 J/mol.
How many grams of NaH2PO4 are needed to react with 43.74 mL of 0.285 M NaOH by the following reaction- NaH2PO4(s) + 2 NaOH(aq) --> Na3PO4(aq) + 2 H2O(l)
Calculate the current (mA) required to deposit 0.89g of tungsten metal in 45 minutes from a solution of WO42-. (Atomic weight: W=183.8)
A sample of sodium reacts completely with 0.497 kg of chlorine, forming 819 g of sodium chloride. What mass of sodium reacted
a patient weighs 165 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. the drug is supplied
The rate constant for a reaction at 40.0 degrees Celsius is exactly 3 times that of 20.0 degrees Celsius. Calculate the Arrhenius energy of activation for the reaction.
Calculate the corresponding Bohr's orbit radius. - Calculate and compare the probabilities for the electron to be at distances larger and smaller than this value.
For analysis, a short peptide seven residues long is treated with FDNB, followed by complete acid hydrolysis and amino acid chromatography. What are the products of these steps. What kind of information can be obtained by amino acid chromatography..
A volume of 25.0 mL of 0.100 M C6H5CO2H(aq) is titrated with 0.100 M NaOH(aq). What is the pH after the addition of 12.5 mL of NaOH. (Ka of benzoic acid = 6.3 ´ 10-5)
Complete the following table with the correct formulas from the ions
A scientist wants to make a solution of tribasic sodium phosphate, Na3Po4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 425 mL of a solution
Assuming that the calorimeter absorbs only a negligible quantity of heat and that the density of the final solution is 1.0 g/mL, calculate the enthalpy change per mole of BaSO4 formed.
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