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While a 0.579g sample of a mixture of volatile hydrocarbons is burned in a bomb calorimeter with a heat capacity of 3389 J/degrees Celsius, the temperature rises by 6.40 degrees Celsius. Explain how much energy (in kilojoules) is released during combustion?
As well as how much energy (in kJ) would be released by the combustion of 3.50 g of the same mixture?
compare in your mind 3 different liquids pure ethanol a 50 ethanolwater mixture and a 50 ethanolmethanol mixture. rank
Calculate the pH of the buffer solution that results from mixing 65.0 mL of 0.15 M HCHO2 with 40.0 mL of 0.13 M NaCHO2
The combustion of one mole of ethanol (C2H5OH(l)) to produce carbon dioxide and gaseous water has ?Hr = -1235 kJ · mol-1 at 298 K. What is the change in internal energy for this reaction?
What mass of sucrose should be combined with 461 g of water to make a solution with an osmotic pressure of 8.85 atm at 310 K? (Assume the density of the solution to be equal to the density of the solvent.)
combustion of 1.031g of a compound containing only carbon, hydrogen and oxygen produced 2.265g if carbondioxide and 1.236g of water. What is the empirical formula for the compound?if the molecuar weight is 180.3g, what is the molecular formula?
Multiple choice questions in free energy change and What is the free energy change in kJ/mole?
Calculate the corresponding wavelenghts (in nm) and energies (in kJ/mol) of these vibrations.
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.700M solution of ammonia, NH3, to prepare a buffer solution that ahs a pH of 8.61?
At what temperature (celsius) will the rate constant for the reaction be 140.0 s-1? Use the conversion Kelvin = C + 273.15
Write electron pushing mechanism of Friedel-crafts acylatoin of anisole with acetic anhydride as acylating reagent and aluminum chloride and CH2Cl2
How many moles of HCl are present in 35.5 mL of a 0.200 M solution? 2. A 50.0 mL sample of a 6.0 M solution of HCl is diluted to 200. mL. What is the new concentration
a 51.6 ml dilute solution of acid at 23.85 degrees celsius is mixed with 48.5 ml of a dilute solution of base also at
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