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Compute the molality of a solution made by mixing 16.9 g of urea, (NH2)2CO in 421.01 g of water.
51.1 g of a substance X dissolves in enough water to make 0.754 L of a 0.579 M solution. Calculate the molar mass of X in g/mol
given the reaction xaq 3yaq ltgt 2zaq. suppose the initial x is 0.55m and y is 0.80 m. after equilibrium is reached
It is desired to inflate a baggie with a volume of 869 milliliters by filling it with hydrogen gas at a pressure of 0.847 atm and a temperature of 296 K. How many grams of H2 gas are needed? answer in g please
Which aqueous solution will have the highest total number of moles of ions in the solution. The answer is 100mL 3M calcium nitrate. Why is it not 100mL 4M glucose (C6H12O6), 100mL 1M aluminum fluoride, or 100 mL 2M calcium sulfide. How do you calc..
An aqueous CaCl2 solution has a vapor pressure of 83.0 mmHg at 50 degrees celsius . The vapor pressure of pure water at this temperature is 92.6 mmHg.
A person weighing 77kg jogs at 1.5m/s. Calculate the momentum and wavelength of the person. Can you observe the wavelength of this person
What will happen to the acetate concentration in equilibrium, [HC2H3O2]-> [H^+]+[C2H3O2^-], when sodium acetate is added
Discuss the differences observed in the IR and NMR spectra of 1-butanol and 1-bromobutane.
in the reaction P4+5O2->2P2O5, how many moles of oxygen are consumed each time 0.500 mole of P2O5 is formed?
Describe the two methods for determing the volume of the vapor In a Molar Mass of a Volatile Liquid experiment? Which method is likely to give more precise results? Why?
The initial temperature of the calorimeter is 23.0C. If 10.0 g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter. The heat of solution, Delta Hsol, of CaCl2 is -82.8~kJ/mol.
Imagine two solutions with the same concentration and same boiling point, but one has benzene as the solvent and the other one has carbon tetrachloride as a solvent.
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