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a. What is the molality of ethylene glycol in an engine's cooling system to ensure the solution doent freeze in a "normal" winter.(minimun temperature of -10C)
b. What mass of ethylene glycol is added, mass of water is 1500g
Calculate amount in unknown from titration and what is the curve supposed to look like - Report the mass of KCl and KI in the original unknown sample
A sample of nitrogen occupies a volume of 546 mL at STP.What volume would nitrogen occupy at 177C under a pressure of 380 torr?
Metal ions can also be placed in a spectrochemical series. In this case, larger effective nuclear charges generally lead to larger values for Delta cm^-1. Based on this principle, predict a spectrochemical series for the following ions
Calculate the heat evolved per mole on combustion of each substance to yield {rm CO_2}(g) and {rm H_2O}(g).
Given that silicon and oxygen form a diatomic molecule of siO, write the orbital (electron) configuration for the molecule
At room temperature 22.0 C the vapor pressure of benzene is 0.302 atm and the vapor pressure of hexane is 0.374 atm. What is the total vapor pressure at room temperature for a 2:1 mixture of hexane to benzene
Assume that the kinetic energy of a 1500 kg car moving at 150 km/h could be converted entirely into heat. What amount of water could be heated from 22C to 48C by the car's energy?
In a separate experiment, 41.6 g of ClF3 was introduced into an empty 2.00 L container at 700.0 K . What are the concentrations of ClF3, ClF, and F2 when the mixture reaches equilibrium
3.5 grams of salicylic acid reacts with an excess amount of acetic anhydride. What is the theoretical yield
in the titration of 50.0 ml of 1.0 m methylamine ch3nh2 kb 4.4 10-4 with 0.50 m hcl calculate the ph under the
What is the difference between a constitutional isomer and a geometric isomer.
Do you expect CN- anion to be affected by a magnetic field? Explain your reasoning. (d) What is the bond order of the anion CN- ? (e) What is the bond order of the neutral CN?
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