Explain the mass of a non volatile compound
Determine the mass of a nonvolatile, nonionizing compound that must be added to 4.21 kg of water to lower the freezing point to 98.70 degrees celsius. The molar mass of the compound is 50.0 g/mol and the Kf for water is 1.86 degrees Celsius Kg/mol
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Four cards are selected, one at a time from a standard deck of 52 cards. Let x represent the number of aces drawn in a set of 4 cards. If this experiment is completed without replacement, explain why x is not a binomial random variable.
An object that is 31 cm in front of a convex mirror has an image located 19 cm behind the mirror. How far behind the mirror is the image located when the object is 19 cm in front of the mirror?
A two-phase liquid-vapor of water has a temperature of 300 ºC and a quality of 75%. The mixture occupies a volume of 0.05 m3. Determine the masses of saturated liquid and vapor present, in kg.
A long horizontal wire carries 16.0 A of current due north. A. What is the absolute value of the net magnetic field 21.0 cm due west of the wire if the Earth's field there points north but downward, 47degrees below the horizontal, and has magnitud
Determine a) the initial temperature, b) the final pressure and c) the change in total internal energy for the given process. Show the process on a T-v diagram.
A 9.4-cm-diameter, 402 g sphere is released from rest at the top of a 0.7-m-long, 25° incline. It rolls, without slipping, to the bottom. What fraction of its kinetic energy is translational?
A sample of 20 items from a population with an unknown s is selected in order to develop an interval estimate of m. Which of the following is not necessary?
Given that the steam tables provide the most accurate value for the variable being evaluated, calculate the percentage error committed in parts b) and c) above.
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