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A 43 kg person drinks 430 g of milk, which has a "caloric" value ofapproximately 3.0 kJ/g. If only 15% ofthe energy in milk is converted to mechanical work, how high (inmeters) can the person climb based on this energy intake? [Hint:The work done in ascending is given by mgh, wherem is the mass (in kilograms), g the gravitational acceleration (9.8 m/s2), and h the height (inmeters.)]
Problem- A) What is the main difference between the isotherms above and d below the critical temperature Tc? Which equation can describe their behavior perfectly and which can describe them only approximately? Why?
Hydrogen fluoride is a highly reactive gas. It has many industrial uses, but the most familiar property of HF is its ability to react with glass. As a result, HF is used to etch glass and frost the inner surfaces of light bulbs
If connected such that one cell acts as a battery to power the other as an electrolytic cell, which two metals are plated, and what is the total potential? (Al,Ag,Zn,Ni) c) If 3.70 g of metal is plated in the voltaic cell, how much metal is plated..
calculate the mass of the water vapor pressure present in a room of volume 400m3 that contains air at 27 degrees c on a
What is the change in internal energy of the system, delta U. The force of gravity on a mass m is mg, where g is the constant acceleration of gravity (g=9.80 m/s^2).
Aluminum metal is formed by the electrolysis of Al2O3 in molten cryolite. How many grams of Al are produced when 6.50 x 10^3 C pass through the cell
To extract quinine from an aqueous solution, what pH should be used and why? I'm not sure if you use both pKa's or just one.
The osmotic pressure of solutions of polystyrene in toluene were measured at 25?C and the pressure was expressed in terms of the height of the solvent of density 1.004 g cm-3.
What is the percentage yield of SO3 if 22.3 g SO3 are obtained from the reaction of 25.0 g SO2 with an excess of O2.
The flow of the Florida Current (part of Gulf Stream) through the straights between Key West and Cuba is 150 x 106 m3/sec. The mass concentration of salt in seawater is about 35,000 ppm. What is the flux of salt in the Florida Current in tonnes/se..
A gas is heated from 268 K to 290 K while its volume is increased from 25.0 L to 37.0 L by moving a large piston within a cylinder. If the original pressure was 0.90 atm, what would be the final pressure?
An unknown mass of each of the following substances, initially at 22.0^circ C, absorbs 1950 J of heat. The final temperature is recorded as indicated. Find the mass of each substance. a. Pyrex glass (T_f=55.1^circ C. B.sand (T_f=62.3^circ C). C.et..
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