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A river had a depth of 1 m, a width of 40m, and a flow of 20 m^3/sec. Assume that the wind speed at 10 m elevation is 4 m/sec. What is the overall mass-transfer coefficient for oxygen from the atmosphere to the river?
calculate the pH of the solution that results from adding 8.50ml of 0.100M NaOH to 50.00 mL of a 0.0500M solution of acetic acid.
a certain transition metal compound contains a cobalt ion ofunknown valence ligands of water molecules and chloride
A plane is flying level with a speed of 320 ms/ and an unknown altitude above ground level and drops an uguided bomb over a flat bombing range. if the bomb travels 2000m downrange, what altitude did the pilot release the bomb.
according to le chateliers principle, what is the effect on the products when N2 is added to the equilibrium mixture of each of the following reactions? a)2NH3(g) 3H2(g)+N2(g). b)N2(g)+O2(g) 2NO(g). c)2NO2(g) N2(g)+2O2(g). d)4NH3(g)+3O2(g) 2N2(g)+..
One commercial over the counter product consists of 500.0 mg tablets that are 20 percent by mass vitamin C. How many tablets are needed for a 1.00 g dose of vitamin C
A mixture of nitrogen and oxygen gas is collected by displacement of water 30 degrees celsius and 700 torr Hg pressure. If the partial pressure of nitrogen is 550 torr Hg, what is the partial pressure of oxygen? (Vapor pressure of H2O at 30 degree..
Indicate the kind of hybridization (sp, sp2, sp3) you expect for each carbon atom in the following molecule. Why does each carbon atom have that hybridization?
The coinage metals -- copper, silver, and gold -- crystallize in a cubic closest packed structure. Use the density of copper (8.95 g/cm3) and its molar mass (63.55 g/mol) to calculate an approximate atomic radius for copper.
Making a dilute solution, A student in lab class needs to provide a detailed description of how to make a dilute solution of 500 g
A diet soda contains 0.5% sodium, 0.25% potassium and 0.6% aspartame. Can you please show me how to calculate how many grams of each you would consume by drinking a 100 mL can of soda.
Hydrogenation of a liquid triacylglycerol converts: a. the ester group to a ketone group, b. the ester group to a carboxylic group
The boiling point of another member of this homologous series was found to be 309 . What is the likely molecular formula for this compound
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