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A 4 X 8-ft solar collector has water circulating through it at the rate of 1.0 gallon per minute (gpm) while exposed to sunlight with intensity 300 Btu/ft2-hr. Fifty percent of that sunlight is captured by the collector and heats the water flowing through it. What would be the temperature rise of the water as it leaves the collector?
Classify the following solutions as saturated, unsaturated, or supersaturated, based on your graph. Note that c. and d. require you to convert from the concentrations give to g/100 g H2O before you refer to the graph.
Although the double bond, in total, is stronger than a single bond, the pi bond itself is weaker and can react with electron-deficient species such as a hydrogen ion.
What is the molecular formula of a compound with the empirical formula NO¿ and a molar mass of 138.02 grams per mole?
if a sample of 0.29 moles of Ar occupies 3.8L under certain conditions, what volume will 0.66 moles of Ar occupy under the same conditions.
The standard enthalpies of formation of SO3(g), S(g) and O(g) are -359.7, +278.8 and +249.0 kJ mol-1, respectively. Use these data to calculate the average bond energy (in kJ mol-1) of the S=O double bond.
M. tuberculosis, the organism that causes tuberculosis, can be completely destoryed by irradiation with UV light with a wavelength of 254 nm. What is the frequency?
Krypton crystallizes as a fcc (face centered cubic unit cell) having an edge length of 559 pm. What is the density of solid Krypton?
If 5.00 x 10^3 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
If a 220mg piece of gold (density =19.32 ) is hammered into a sheet measuring 2.11.0 , what is the average thickness of the sheet in meters.
Calculate the entropy change that occurs when 3.5 moles of an ideal gas expands from 1.75 L at 20 degress Celsius to 8.46 L at .54 atm.
Compute the expected change in temperature for 1.7 grams of ammonium nitrate NH 4 NO 3 dissolved in 50.0 mili litres of water H 2 O.
Students in the lab place some sodium chloride in the beaker and remassed it to obtain a mass of 73.25 grams using a digital balance. Find the mass of salt in the beaker.
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