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Chloroflurocarbons (CFCs) are no longer used as refrigerants because they help destroy the ozone layer. Trichlorofluoromethane (CCl3F) boils are 23.8C and its molar heat of vaporization is 24.8 kj/mol. Calculate the molar entropy of evaporation of CC3F (l)
Determine the boiling point of a solution of 72.4 g of glycerol dissolved in 122.5 g of water.
a) What is the structure of biacetyl? b) Indicate the hybridization of each carbon atom. c) How many pi bonds are present? d) Do the four carbon atoms lie in a plane or do they lie in a straight line?
Suppose 5.00g of Ca is added to 50.0mL of 1.00M HCL. Determine the limiting reactant in this case and number of moles of calcium actually consumed.
When 100.g Mg3N2 reacts with 75.0 g H2O, 15.0 g of NH3 is formed. What is the % yield?
Determine What is the final concentration and calculate what is the Ksp of this salt at temperature of 25 degrees Celsius?
a 200 gram sample of a large biomolecule was dissolved in 15 grams of carbon tetrachloride. the boiling point of this solution was determined to be 77.85 degees celcius. calculate the molar mass of the biomolecule.
The ache or "burn" you feel in your muscle during strenuous exercise is caused by the accumulation of lactic acid. The hydrogen atom of the COOH group is acidic
How many milliliters of 0.200 M NaOH will be required to titrate 14.5 mL of 0.479 M H2SO4?
Calculate the gas NH3 in ppm over NH4OH solution.The density of the solution is 0.9g/ml and the Commercial concentrated aqueous ammonia is 29%.
The flask was then shaken until the solution was uniform. A 55.0-mL sample of this glucose solution was diluted to 0.500L . How many grams of glucose are in 100mL of the final solution?
Determine what given process is occurring when the color appears in the flame and an electron emits energy and it makes a transition to a higher energy orbital.
the temperature inside a pressure cooker is 111°C. Calculate the vapor pressure of water inside the pressure cooker.
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