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Problem- The use of the British thermal unit (Btu) is common in much engineering work. ABtu is the amount of heat required to raise the temperature of 1 lb of water by 1?F.
Calculate the number of joules in a Btu.
If possible just a brief explanation how you got the answer?
What mass of liquid water remains in the flask when equilibrium is established? The equilibrium vapor pressure of water at 55 °C is 118 mm Hg.
Describe and explain how each of the following experimental errors or variations might affect your results. a) you failed to dry the reaction flask after washing it with water.
Estimate the temperature needed to achieve the fusion of deuterium to make an alpha particle. The energy required can be estimated from Coulomb's law
If 26.23mL of potassium permanganate solution is required to titrate 1.041g of ferrous ammonium sulfate hexahydrate, FeSO4(NH4)SO46H2O.
A high jumper of mass 80.0 kg consumes a meal of 2.00 103 kcal prior to a jump. If 3.3% of the energy from the food could be converted to gravitational potential energy in a single jump, how high could the athlete jump
Caffeine has a distribution coefficient of 4.6 between methylene chloride and water. If 52 mg of caffeine are added to a conical vial containing 2 mL of water and 2 mL of methylene chloride, how much caffeine would be in each layer after the mixtu..
positrons cannot penetrate matter more than a few atomic diameters but positron emission of radiotracers can be
Calculate each of the following quantities for an ideal gas: a) The volume of gas, in liters, if 5.32 moles has a pressure of 3.72 atm at -72°C. b) The temperature (in C) of a gas containing 8.55 x 10-12 moles occupying 64 mL at 693 torr.
The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure gold in an irregularly shaped object (e.g., a crown) by placing it in water. How much water should be displaced by a pure gold object having a mass of..
A sealed container holding 0.0255 L of an ideal gas at 0.999 atm and 67C is placed into a refrigerator and cooled to 45C with no change in volume. Calculate the final pressure of the gas.
the volume of a typical bacterical cell is on the order of 1.0 cubic microns. at ph 7.0 how many hydrogen ions are
Depict the skeletal structure of the monohalogenated alkenes formed when trans-1-chloro-4-iodocyclohexane is reacted with 1 equivalent of sodium tert-butoxide.
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