Physics, 09.03.2021 01:00, jtingley0502
17.3 mg sample of an organic compound (a non-electrolyte) was ground up with 420 mg of camphor to form a homogeneous mixture melting at 170.0 oC. What is the apparent formula weight of the organic compound? (Kf of camphor = 37.7 oC/m, m. p. of camphor = 178.4 oC) (Note: This is a freezing point depression problem - note the Kf of camphor - camphor is the solvent.)
Answers: 2
Physics, 22.06.2019 05:10, zionnahl
Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
Answers: 3
Physics, 22.06.2019 12:00, jasondesatnick
Explain what happens at the saturation point when adding salt to water at room temperature.
Answers: 3
Physics, 22.06.2019 13:40, crayons18
An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.
Answers: 2
17.3 mg sample of an organic compound (a non-electrolyte) was ground up with 420 mg of camphor to fo...
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