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The density of toluene (C6H5CH3) at 25 °C = 0.862 g/mL, and its vapor pressure at 25 °C = 28.44 torr. At 25 °C, the vapor pressure of toluene above a solution of naphthalene (C10H8) in 500.0 mL toluene is found to be 27.92 torr. How many grams of naphthalene are present in the solution?
a 1l flask is filled with 1.00 g of argon at 25 c . a sample of ethane vapor is added to the same flask until the total
water with a mass of 0.500 rm kg at 15.0circ rm c is mixed with 0.800 rm kg of water at 35.0circ rm c. what is the
acetic acid has a Ka value of 1.8x10^-5. How many grams of NaC2H3O2 would have to be added to 100 ml of .1 M HC2H3O2 to prepare a buffer with a pH of 4.5?
How is the mass in amu of one atom of an element related to the mass in grams of one mole of the element?
For the reaction 2C6H6 + 15O2 → 3CO2 + 6H2O 30 grams of C6H6 are allowed to react with 79.09 grams of O2.
Explain why the boiling point of your cyclohexane: toluene mixture rose slowly throughout your simple distillation procedure. Explain this in terms of the temerature/composition diagram
In the following conditions calculate the moles of hydrogen and the pressure in each flask where the volume is negligible. Each flask is originally 275K with .455 mols of hydrogen gas and .7atm of pressure. Then one flask is heated to 500K while t..
? sample of neon has a volume of 1.50 litres initially at 16 degrees celsius. when the volume of the sample is charged
Some refrigerators cool their contents by evaporating liquefied dichlorodifluoromethane CCl2F2. How many kg of this liquid must be evaporated to freeze a tray of ice cubes at room temperature (25 degrees C) Delta H fusion= 6.01 kJ/mole
a 24.6 ml volume of hcl solution reacts completely with a solid sample of magnesium carbonate producing 183 ml of
For the cell reaction: Cu(s) + 2Fe3+ ? 2Fe2+ + Cu2+ Ecell° = 0.33 V What is the value of the equilibrium constant at 25°C for the cell reaction
looking at altast transamination pathway what would be the cascade effect if the pirydoxyl amine phosphate has a
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