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Iron(II) chloride (melting point 677°C) and potassium chloride (melting point 776°C) form the compounds KFeCl3 and K2FeCl4 at elevated temperatures. KFeCl3 melts congruently at 380°C and K2FeCl4 melts incongruently at 399°C. Eutectics are formed with compositions x = 0.38 (melting point 351°C) and x = 0.54 (melting point 393°C), where x is the mole fraction of FeCl2. The KCl solubility curve intersects the K2FeCl4 curve at x = 0.34. Sketch the phase diagram. State the phases that are in equilibrium when a mixture of composition x = 0.36 is cooled from 400°Cto 300°C.
Calculate the mass of propylene glycol that must be added to .360 kg of water to reduce the vapor pressure by 2.87 torr at 40 degrees celsius (Ph20 at 40 degrees = 55.3)
Imagine that you have a 6.50L gas tank and a 2.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
The rate constant for a reaction is 1.6 x 10^-2 s^-1 at 680k and 4.6 x 10^-2 s^-1 at 890 K. What is the activation energy?
What volume of gaseous chlorine at STP would you need to obtain a 250.0 g sample of gas
A catalyst decreases the activation energy of a given reaction by exactly 15 kJ/mol. By what factor does the reaction rate increase at 25oC when the catalyst is used
If a sample of oxygen that occupies 1.00 x10^6 mL at 575 mmHg is subjected to a pressure of 1.25 atm, what is the final volume of the the sample?
Basic copper carbonate contains 57.48% copper and 5.43% carbon by mass. What mass of copper in g is contained in 7.061 kg of basic copper carbonate
In organic synthesis, we are often using drying agents such as sodium sulfate, magnesium sulfate, etc. to dry our solutions. Which of the following is true? (There are more than one correct answers)
The density of pure silver is 10.5g/cm3 at 20 C if 525 g of pure silver pellets is added to a graduated cylinder containing 11.2 ml of water to what volume
What is the molecular formula of each compound. (Type your answer using the format C6H12O6 for C6H12O6 and use the same order of the elements as in the empirical formulas.
Propane, C3H8, when used as a fuel, reacts with oxygen gas to produce carbon dioxide and water. What mass of oxygen will be required to react with exactly 14.05 grams of propane?
How much antifreeze would you add to a 2.0 gal water tank in order to obtain a solution that freezes
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