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The gaseous hydrocarbon acetylene, C2H2 is used in welders' torches because of the large amount of heat released when acetylene.
The compound methylchloride, CH3Cl, has a vapor pressure of 100 mmHg at 210 K and 10 mmHg at 181 K.
At 25 degees C, ?Ho for the combustion of liquid octane, C8H18(l) to form CO2(g) and H2O(l) is -5471kJ/mol. Calculate ?Eo for this reaction at 25 degrees C.
How would the results for atomic weight have differed if the hot water was never brought to a boil?
Consider a crystallization of sulfanilamide in which 10 mL of hot 95% ethyl alcohol is added to 0.10g of impure sulfanilamide.
If the mass in part 1 was dissolved in an excess of aqueous HCl, what colume of hydrogen gas would be released at STP?
Find the mole ratios of the reactants and products required to solve any stoichiometric problem.
What will be the sample weight increase after the process of nickelization upon 62% current efficiency?
Use thermodynamics to prove that the reaction shown below is non-spontaneous at room temperature (25 °C).
Using the heat of combustion of octane C8H18 (l) -5470.5 and heat of formation table determine the enthalpy formation value for octane.
The enthalpy of solution of KClO3 in water is +41 kj/mol. Does the solubility of KClO3 increase or decrease as the temp increases?
Calculate the maximum concentration (in M) of sulfide ions in a solution containing 0.181 M of lead ions. The Ksp for lead sulfide is 3.4 x 10-28.
Calculating osmotic potential.There was an experiment conducted to determine the osmotic potential of potato tissue.
Which one of the following statements is true about the equilibrium constant for a reaction if ?G° for the reaction is negative?
If you were to plot the data on a graph using 2 lines (one for water and one for oil) with the Temperature on the y-axis and the time.
If 596 J of heat are added to 29.6 g of water at 22.9 degrees Celsius in a coffee cup calorimeter, what will be the final temperature of the water?
If an aluminum sphere has a mass of 23.01 grams and was heated to 137.0 Celsius and lowered into a cup containing 20.00 mL of water at 21.0 Celsius.
The decomposition of solid potassium chlorate by heating yields solid potassium chloride and oxygen gas products.
If a system loses 300 kJ of heat at the same time that it is doing 600 kJ of work, what is the change in the internal energy of the system?
When using a calorimeter to do detailed heat calculations, you must determine the heat capacity of the individual calorimeter you use as a calibration.
Calculate the enthalpy change for the reaction: given the following enthalpies of reaction.
How many kilojoules of heat are released when 27.0g of CO reacts completely with H2 to form CH3OH at constant pressure?
Is Iron Pyrite a mixture or compound? What about Salt Water? What about Silicon Dioxide? What about Sand?
Add 2 mL each of silver nitrate [AgNO3], lead nitrate [Pb(NO3)2] and mercury(I) nitrate[Hg(NO3)2] to the test tube. The chlorides formed are: AgCl, PbCl2, Hg2Cl
Consider the exothermic reaction 2NO(g) + Br2(g) 2NOBr(g). What can you do to the reaction mixture to produce more NOBr?