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The solar power striking Earth every day averages 168 watts per square meter. The peak electrical power usage in New York City is 12,000 megawatts. Considering that present technology for solar energy conversion is only about 10% efficient, from how many square meters of land must sunlight be collected in order to provide this peak power? (For comparison, the total area of the city is 830 km2.)
When natural gas (mainly CH4) is burned with 10 percent excess air, in addition to the main gaseous products of CO2 and H2O, other gaseous products result in minor quantities. The Environmental Protection Agency (EPA) lists the following data: Emi..
kininogen which is a lysine-rich protein . Like HRGP , it is able to bind to glycosaminoglycans and antimicrobial, but this binding is far less sensitive to small fluctuations id physiological pH. Q1 , Why does kininogen bind to glycosaminoglycans e..
Determine the molarity of acetic acid in a 15 ml sample of vinegar that requires 22.7 ml of a .550 M solution of NaOH
A aqueous 5L salt solution contains 0.5kg of NaNO3. Calculate the melting point, boiling point, vapor pressure and osmotic pressure of the solution at 25C. Assume density = 1.0g m/L.
question the freezing-point depression of a 0.100 m molality mgso4 solution is 0.225 degrees celsius. determine the
A 2.30 L sample of neon at 5.35 atm is added to a 10.0 L cylinder that contains argon. If the pressure in the cylinder is 7.00 atm after the neon is added, what was the original pressure (in atm) of argon in the cylinder?
Provide the chemical reaction that occurred when HCl was added. For this reactions use hydronium in place of HCl as that is the active acid. Show all lone pair electrons and formal charges. What does the amount of precipitate in each tube indicate..
you mix 2.0 ml of 0.50 m cuno32 with 5.0 ml of 0.50 m ki and collect and dry the cui precipitate. calculate the
Problem- Despite the fact that almost all physicians no longer recommend that children not be given aspirin because of fears of triggering Reye's syndrome, "baby" aspirin sales have remained strong. Suggest a reason.
Utilizing the Bohr model for hydrogen-like atoms, prepare first-order estimates of the energies expected for the Ka, Kß, La, and Lß x-ray fluorescence transitions as well as the ionization energy of an electron in the K shell. Report the energies ..
Calculate the number of moles of quicklime, CaO, that would be produced by the decomposition of 30.0 moles of limestone, CaCO3, in the following reaction.
It is determined that 3.75 x 10^-4g of a contaminant is present in 3750g of a particular solution. What is the concentration of contaminant in ppm (m/m)?
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