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The vapor pressure of pure ethanol at 60°C is 349 torr. A solution is prepared by dissolving 10.0 mmol naphthalene (nonvolatile) in 90.0 mmol ethanol. Raoult's law predicts what vapor pressure in torr at 60°C?
if you use a one liter bottle of oil in your engine determine how much heat is produced in kcal the density of motor
an ice cube is placed in a beaker of water at 20 c. the ice cube partially melts and the temp of the water is lowerd to
A bicycle tire is filled with air to a pressure of 81.0 psi at a temperature of 19°C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58°C. The volume of the tire increases by 2.0%. What is the new pressure in the ..
A weak acid (HA) has a pKa of 4.303. If a solution of this acid has a pH of 4.990, what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.)
What compounds will be present after chemical reaction has occurred. Write out a balanced chemical reaction for this description, and name all compounds present.
What is the energy per photon of the lowest frequency of electromagnetic radiation that can be used to observe a gold atom with a diameter of 280 picometers.
Balance the following redox equation in acid: VO2^+(aq) +Zn(s) --->VO^2+(aq)+Zn^2+(aq)
Values for Ksp at O degrees C, 50 degrees C, and 100 degrees C are 1.14X10^-15, 5.47X10^-13, and 4.9X10^-14 respectively. Calculate the pH for a neutral solution at each of these temperatures.
what is the molarity of a solution prepared by dissolving 2.06g of NaOH in a volume of 500.0ml?
How many air molecules are in a 10.0x20.0x10.0 ft room? Assume atmospheric pressure of 1.00atm , a room temperature of 20.0C , and ideal behavior.
one of the precursors you need to verify a mechanism is benzaldehyde with the para-hydrogen isotopically labelled as
using a sample of a compound containing only oxygen and chlorine reacts with an excess of h2 gas to give 0.206 g
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