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Stewart has a BMR of 160. kJ/d and climbs to the 13th floor of his office building in 4.00 min while consuming only 0.0100 kg of carbohydrate having an energy content of 17.2 MJ/kg. The distance between the floors is 7.60 m. What is Stewart's energy conversion efficiency if he does not lose any weight during the climb?
Note: Stewart must supply energy to achieve his kinetic energy motion, but this energy is not recovered when he stops.
A zero-order reaction has a constant rate of 1.00×10-4 . If after 80.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration.
Alcohols are less volatile than ethers of the same molecular weight, but the two classes of compounds have approximately the same solubility in water because
Explain how many milliliters of a stock HCL solution labeled specific gravity 1.19 as well as assay 38% will be needed to prepare 2L of a 1.5N HCL solution
the solubility of kcl in h2o 34.0 g kcl100 g h20 at the temperature of twenty degree celsius. a solution warm having
Acylation of n-propylbenzene gives an unexpected side product. Explain this occurance and give a mechanism.
Calculate acidity of sample and express in % (w/v) CH3COOH. show complete solutions and please don't cite websites or like
In a hydrogen atom, from what energy level must an electron fall to the n = 3 level to give a line at 1.28 micrometers in the infrared region? a. 7 b. 5 c. 6 d. 4 e
10 mol/s of liquid benzene at 20°C and 1 bar is pumped to 5 bar. At the inlet conditions, the molar volume of benzene is 11.8 liter/mol. Estimate the outlet temperature of the benzene and the work done by the pump in kW. What assumptions have you ..
Ziram and fuberidazole are 2 weak bases, estimate what pH the water would need to be to drop their vapor pressure to 50% that of a solution of a free base
Window glass is typically made by mixing soda ash (Na2CO3), limestone (CaCO3), and silica sand (SiO2) and then heating to 1500 degrees Celcius to drive off Co2 from the Na2CO3 and CaCO3.
gallium arsenide is a common semiconductor. this material becomes a conductor when irradiated with infrared light whose
A 15.0 gram sample of chromic acid is dissolved in enough water to produce 275 mL of solution. The concentration of the solution is ?
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