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69.7g of a solute with a molecular mass of 2790g are dissolved inenough water to make 1.00dm3 of a solution at 20degrees celcius. what is the osmotic pressure of the solution?
MgNH4PO4 6H2O loses H20 stepwise as it is heated. Between 40c and 60c the monohydrate is formed and above 100c the anhydrous material is formed. What are the phosphorus percentages of the monohydrate and of the anhydrous material?
For the chemical system CO + Cl2 COCl2; K = 4.6 x 109. If the concentration of the product were to double, what would happen to the equilibrium constant
When 1.28 mg of hydrogen peroxide decomposes in the presence of manganese dioxide to form water and oxygen, how many miligrams of each are produced?
A woman had a heart attack caused by thrombus. the cells immediately downstream from the thrombus were deprived of oxygen and , as a result, increased
determine what volume of hydrogen h2 gas measured at the pressure and temperature 758mm hg and 88 degrees c
Suppose that 1.06 g of rubbing alcohol (C3H8O) evaporates from a 64.0-g aluminum block. If the aluminum block is initially at 38°C, what is the final temperature of the block
A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 36mg.
A reaction has an activation energy of 40 kJ/mol. What happens to the rate if you increase the temperature from 70 C to 80 C? Does the rate increase by
The equilibrium constant, Kp, for the following reaction is 0.497 at 500 K: PCl5(g) PCl3(g) + Cl2(g) Calculate the equilibrium partial pressures of all species when PCl5(g) is introduced into an evacuated flask at a pressure
When placed in a graduated cylinder that initially contains 24.00 mL of water, the water level rises to 28.55 mL. What is the density of the unknown material?
What volume of water vapor is created by the complete combustion of 38.7 liters of methane gas?
Suppose it had been decided that the Avogadro constant should be recalculated as the number of gold atoms in 197.00g of gold. Gold is a desirable standard because it is not very reactive and because it is not very reactive and because it has only ..
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