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Magnesite MgCO3 and siderite FeCO3 are the Mg and Fe end-members of the magnesite-siderite solid solution. What is the mole fraction of CaCO3 (XCaCO3) in magnesite and siderite?
What mass of CCl4 will be formed if 1.20 moles of methane react with 1.55 moles of chlorine?
Calculate rate constant for 1. level reaction where 81% of the matters have already react after 27 seconds.
Determine water solubility under normal atmospheric conditions (assuming that Carbon dioxide obeys Henry's law?)
A 4.22g sample of CuS was added to excess HCl, and the resulting H2S was collected over water. What volume of H2S was collected at 32 degrees celsius
The vapor pressure of ethanol is 100 mmHg at 34.9oC. Its molar heat of vaporization is 39.3 kJ/mol. What is the vapor pressure of ethanol in mmHg at 57.5 oC?
If a 484 mL sample of gas at 232 °C is allowed to expand (at constant pressure) to a volume of 494 mL, what will be the new temperature (in °C).
What is the work in kilojoules done during a synthesis of ammonia in which the volume contracts from 7.0 L to 4.3L at a constant external pressure of 47 atm?
A pipette is used to add 46 mL of 0.3 M Pb(NO3)2 to a 273.0 mL solution of 0.3 M NaF. Determine the equilibrium concentration of Pb2+(aq) in the final solution. Ksp(PbF2)=3.6E-8
Some of the cyclohexane solvent vaporized during the temperature versus time measurement. Will this loss of cyclohexane result in its freezing point being recorded as too high
A quanity of oxygen gas was collected over water at 30 c in a 475 mL container. The pressure in the container was measured to be 105 kPa. How many grams of oxygen gas were collected?
A meteorological ballon contains 250.0L He at 22 degrees celsius and 740.0mm Hg. If the volume of the ballon can vary according to external conditions
What is the Molarity of a solution prepared by diluting 55mL of .65 M hydrochloric acid solution to a final volume of 155mL by adding water.
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