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A mixture is 10 mole % ethyl alcohol, 75 mole % ethyl acetate and 15 mole % acetic acid. calculate the mass fractions of each compound. what is the average molecular weight of the mixture? what would be the mass (kg) of a sample containing 25 kmol of ethyl acetate?
The standard free energy change for N2O4(g) ? 2 NO2(g) is 5.4 kJ at 25oC. a) What is the equilibrium constant for this reaction? b) What is ?G if we set up the flask to start with 0.450 atm N2O4 and 0.120 atm NO2?
The compound Ca3(PO4)2 has a Ksp of 2.0 X 10-29. If the phosphate ion concentration is adjusted to a value of 2.5 X 10-2, what is the minimum Ca2+ concentration that will cause precipitation
calculate the molarity of a solution of glycerol made by dissolving 34.000 ml glycerol at 15 c in enough water to make
Which of the following terms define(s) an acid according to the Bronsted-Lowry theory?
The gaseous product of a reaction is collected in a 25.0 L contained at 27 degrees Celsius. The pressure in the container is 216 kPa, and the gas has a mass of 96.0g. What is the molar mass of the gas?
Determine the percent yield for the reaction between 3.74g of Na and excess O2 if 5.35g of Na2O2 is recovered
What is the total anion concentration (in mEq/L) of a solution that contains 6.0 mEq/L Na+, 13.0 mEq/L Ca+
if the empty cylinder has the mass of 94.2g and the cylinder with water has the mass of 138.7 g what is the mass of water, volume of water and the density of water.
Partial pressure of argon = ( ? )atm. Now suppose that 7.00 moles of xenon are added to the vessel without changing the volume or temperature. What is the partial pressure of argon now
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 4.00 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP = 30.8 ..
The following questions are based on the following reaction, in which Cl has a -1 oxidation number in MnCl2. 4HCl + MnO2 --> Cl2 + 2H2O + MnCl2. What is the oxidizing agent?
A couple of drops of water were accidentally placed on the properly folded filter paper before its mass was measured.
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