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Briefly explain the geometry (hybridization) of an amide nitrogen, and resonance explanation for the conformational stability of the amide -(C=O)-N group.
How many many molecules of XeF6 are formed from 12.9L of F2 (at 298K and 2.60atm). Asssume there is an excess of Xe
100 mL of 0.200 M HCl is titrated with 0.250 M NaOH .What is the pH of the solution at the equivalence point?Express the pH numerically.
A piston has an external pressure of 14.0 torr. How much work has been done if the cylinder goes from a volume of 0.130 liters to 0.530 liters.
Calculate the change in entropy (deltaS) when one mole of diamond is heated from a temperature of 0 K to 400 K at a constant pressure of 1 bar. The temperature-dependent heat capacity of diamond is Cv
an adult person radiates heat to the surroundings at about the same as a 100-watt electric incandescent lightbulb. what is the total amount of energy in kcal radiated to the surroundings by an adult in 24 hours?
How many grams of CH3OH must be added to water to prepare 150 mL of a solution that is 2.0 M CH3OH?
An unknown gas having a mass of 2.041 g occupies a volume of 1.15 liters at 0.974 atm and 20 degrees Celcius. Calculate the molar mass of the unknown gas.
80.0 of is initially at room temperature (22). A chilled steel rod at 2 is placed in the water. If the final temperature of the system is 21.5, what is the mass of the steel bar?
You are asked to prepare an aqueous solution of ethylene glycol (HOCH2CH2OH) with a mole fraction of 0.142.
For the reaction SO3+H2O=H2SO4 calculate the percentage yield if 600 g of sulfur trioxide react with excess water to produce 475 g of sulfuric acid
Alcohols are less volatile than ethers of the same molecular weight, but the two classes of compounds have approximately the same solubility in water because
Assuming the heat absorbed by the styrofoam is negligible, calculate the expected final temperature. The specific heat of water is 4.184 J g-1 K-1.
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