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How many moles of Na2SO4 are present in 200(cm cubed) of a solution which has a concentrated of 0.1mol dm(-3).
Which of the following molecules would you expect to be the most strongly attracted to a Cl- ion. H-F
What amount of energy would be released upon formation of a mole of 28Si nuclei from their subatomic particles?
The heat capacity of copper is 0.382 J/g C. A 22.6 g sample of copper at 93 C is placed in 50 g of water at 23.9 C. What is the final temperature of the system
1.00 mole of an ideal gas (Cv,m=12.47 J mol-1 K-1) is initially at 300 K and in 10 L and is expanded to 20 L in two different ways described below. Compute w, q, deltaU, delta S, and delta S total for both of these two processes.
a mixture of three gases has a total of 756 mm Hg. If the pressure of nitrogen is 612 mm Hg and the pressure oxygen if 100 mm Hg, what is the pressure of the carbon dioxide gas in the mixture?
Calculate delta s for reversibly heating 2.000mol of liquid water from 0.00C to 100.00C at a constant pressure of 1.00atm. the specific heat capacity of liquid water is nearly constant and is equal to 1.00cal/kgm or 4.18j/kgm
Solution A and B have osmotic pressures of 2.4atm and 4.6atm respectively at certain temperature. Explain what is the osmotic pressure of a solution organized by mixing equal volumes of A and B at the same temperature
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 20.0 g of luminol to rm H_2O creating a solution with a total volume of 75.0 rm mL.
suppose that coal of density 1.5 gcm3 isnbsp pure carbon. it is in fact much more com-nbsp plicated but this is a
Calculate the energy in the form of heat in kj, required to convert 225 grams of liquid water at 21.0 degrees Celsius to steam at 115 degrees Celsius.
Identify the limiting and excess reactions and how many grams of the excess will be unused.
a mixture of immiscible liquids both water-insoluble is subjected to steam distillation. at 90 degrees c the vapor
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