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The total power utilized by humans worldwide is approximately 15 TW (terawatts). Sunlight striking Earth provides 1.336 kW (kilowatts) per square meter. The surface area of Earth is around 197,000,000 square miles. Explain how much of the Earth's surface would we want to cover with solar energy collectors to power the planet for utilize by all humans? Presume that the energy collectors can only convert 10% of the available sunlight into useful power.
Calculate the percent ionization of Benzoic acid for the following concentration: (a) 0.40 M (b) 0.00040 please show work I got the right answer for a which is 1.3% but i cant find b
If 4.86 g of solid carbon dioxide was placed into an evacuated 2.00 L container, sealed, and then heated until it completely changed to a gas with a final temperature of 75 degrees celcius, what would be the pressure?
a mixture of these these gases has a total pressure of 1380 mmhg at 298 k. the mixture is analyzed and is found to
Propylamine, also known as n-propylamine, is an amine with the chemical formula C3H9N. Propylamine is a weak base with its Kb equaling 4.7 * 10^(-4). Calculate the pH of 0.59 M solution of propylamine hydrochloride.
When 0.250 grams of a polymer were dissolved in 22.9 mL of benzene at 21.6 degrees C, the osmotic pressure was found to be 0.044 atm. Calculate the molar mass of the protein.
A sample of gas with a mass of 6.87g occupies 3.25L at STP. What is the molecular weight?
Consider the following chemical equation. Al(OH)3(s) + H2SO4(l) ? Al2(SO4)3(aq) + H2O(l) If 3.30 g of aluminum hydroxide reacts with 1.50 g of sulfuric acid, what is the mass of the water produced
what are the standard half cell potentials; E anode and E cathode? If the electrochemical cell is allowed to operate as a gavanic cell, which solution species will be oxidized, which solution species will reduce
The equilibrium expression for the reaction: 2C(s) + 2H2O(I) ? CH4(g) + CO2(g) is Keq = [CH4][CO2]. If an equilibrium reaction shifts to the right when the system is cooled, this indicates that the reaction is endothermic
How many unpaired electrons can Co(II) possibly have in a tetrahedral, octahedral and square planar complex
While A solution containing 10-5 M ATP has a transmission of 0.702 (70.2%) at 260 nm in a 1 cm cuvette. Compute a) the transmission of the solution in a 3 cm cuvette, b) the absorbance and transmission of a 5 x 10-5 M solution in a 1 cm cuvette. a..
Assume no heat is lost to the surroundings. The normal boiling point of methane is -161.5 C. The specific heats of liquid and gaseous methane are 3.48 and 2.22 J/g.K, respectively. A)liquid B)gaseous C)solid
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