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A human typically evolves about 20kJ per kg per hour of heat mostly from the oxidation of food. The average human is 62 kg. There are about 6 billion people on the planet. In one week period explain what is the total increase in entropy of the universe coming from us humans? Explain the average temperature on earth is 293 K.
Laser atomic fluorescence excitation and emission spectra of Na in an air acetylene flame are shown. in the excitation spectrum the laser was scanned through various wavelengths while the detector monochromator was held fixed near 589 nm.
In an experiment, at this temperature, 1.10 mol of H2 and 1.10 mol of F2 are introduced into a 1.08-L flask and allowed to react. At equilibrium, all species remain in the gas phase.
Determine the mass of precipitate (in grams) that forms when 213.8 mL of 0.132 M CaCl2 solution is reacted with excess AgNO3 solution.
Is the dissolving of calcium hydroxide in water an endothermic or exothermic process?
Commercially available concentrated sulfuric acid is 18M. calculate the volume of this acid that is required to prepare
the specific heat capacity of silver is 0.235 jg k. its melting point is 962 c and its enthalpy of fusion is 11.3
The spherical r theta phi equation needs to be used but am having difficulty with the integral of the equations.
a scientist wishes to compress 50.0 ml of ammonia gas at normal atmospheric pressure to a volume of 1.0 ml. what
when sodium bicarbonate or sodium hydrogen carbonate is heated above the temperature of 270 degrees celsius it
How many electrons are transferred between the cation and anion to form the ionic bond in one formula unit of each compound? (1 electrons, 2 electrons, 3 electrons, 4 electrons)
Why do flares contain magnesium powder rather than a solid piece of magnesium? -Smaller particles have a lower energy of activation than larger particles.
Silver chloride, often used in silver plating, contains 75.27% .Calculate the mass of silver chloride in grams required to make 4.4 of silver plating.
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