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A 45 kg person drinks 390. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 18% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? [Hint: The work done in ascending is given by mgh, where m is the mass (in kilograms), g the gravitational acceleration (9.8 m/s2), and h the height (in meters.)]
A mixture of Na2CO3 and NaHCO3 has a mass of 81.1g. it is dissolved in 1.00L of water and the pH is found to be 9.92. what is the mass NaHCO3 in the mixture
How many isomers of dimethylcyclohexanediol could you get from complete hydroboration-oxidation of 1,4-dimethyl-1,4-cyclohexadiene? Draw them all.
Compute the concentrations of all species in a 0.900 M sodium sulfite solution. If it is given that the ionization constants for H2SO3 are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
Using your value of the first-order rate constant, calculate the rate of reaction after approximately 15, 45 and 60 minutes has passed?
If you have 230 mL of water at 25 deg celcius and add 140 mL water at 95 deg celcius. What is the final temperature of the mixture?
At a certain temperature, reaction has equilibrium constant (Kc) of 1.9 x10^19. Determine the equlibrium constant for the reaction based on this information at the same temperature.
A particular method is to be used to analyze an ore that contains 4.8% copper. What minimum sample weight should be taken if the relative error due to a 0.5 mg loss is to be smaller than .1%
how you will prepare 3-methly-1-butanol from a grignard reagent and any needed aldehyde or ketone.
Calculate the volume of carbon dioxide at 20.0 degrees C and 0.910 atm produced from the complete combustion of 5.00 methane. Compare your result with the volume of CO2 produced from the complete combustion of 5.00 kg of propane (C3H8).
used to fill a weather balloon in order to lift equipment into the stratosphere. To what maximum pressure (in atm) could a 271 L balloon be filled?
Determine the mass of the hydrate and the mass of the sulfate after removing the water. 2. Calculate the number of moles of water and the number of the moles of the anhydrous sulfate
In the purification process, the organic layer is washed sequentially with 2 M NaOH, water, and saturated aqueous sodium chloride. What is the purpose of each of these washes and why is cold 2 M NaOH recommended?
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