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A nonvolatile nonelectrolyte compound having a molar mass equals to 18000 g/mol is dissolved to give 100 mL aqueous solution that has an osmotic pressure equals to 26 mmHg at 27oC. The mass (in g) of this compound dissolved in this solution is: A) 2.1 B) 2.3 C) 2.5 D) 2.7
The solubility of Ce(IO3)3 in a 0.20 M KIO3 is 4.4 multiplied by 10-8 mol/L. Calculate Ksp for Ce(IO3)3.
The heater used to heat 1400 L of air in a hot air balloon is turned off. c) A balloon filled with helium at an amusement park is left in a car on a hot day.
A student mixed 75.0 mL of water containing 0.75 mol HCl at 25 degrees C with 75.0 mL of water containing 0.75mo of NaOH at 25 degrees in a foam up calorimeter. The temperature of the resulting solution increased to 35 degrees C.
0.12g of compound "Y" dissolves in 10ml of acetone @ 25 deg C and 0.85g of the same compound dissolves in 10 ml of boiling acetone. If 5g of compound "Y" were to be recrystallized from 75 ml acetone, what will be the next maximum amount of "Y" tha..
For this system, calculate the change in entropy (ΔS), the change in internal energy (ΔU), and the change in enthalpy (ΔH) for a reversible adiabatic expansion of this gas to a final pressure of 1.10 atm. Also calculate the final temperature (T) a..
An open flask sitting in a lab fridge looks empty, but we know that actually it is filled with a mixture of gases called air. If the flask volume is 4.00 L, and the air is at standard temperature and pressure,
A gas-filled balloon having a volume of 2.50 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth)
A piece of metal with a mass of 18.2 grams was dropped into a graduated cylinder containing 16.50mL of water. The graduated cylinder after the addition of the metal is 18.40. Determine the density of the metal.
If 50 g of KNO3 is completely dissolved in 100 g of water at 70 degrees Celcius, is the solution saturated, unsaturated, or supersaturated?
Determine the molar mass of the acid and given that the pH at the half way point to the equivalence is 3.86. Calculate the Ka of the unknown acid.
Suppose sulfur dioxide reacts with oxygen at 25 degrees Celsius. 2SO2 (g) + O2 (g) ->
Consider an apparatus shows gases in two containers and one empty container. When the valves are opened and the gases are allowed to mix at constant temperature, what is the distribution of atoms in each container
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