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A sample of sucrose, C12H22O11, weighing 0.1265 g is burned in a bomb calorimeter. After the reaction is over, it is found that to produce an equal temperature increment electrically, 2,082.3 joules must be expended.A) Calculate ?H and ?U for 1 mole of sucroseB) Using data tables and the answer to (A), calculate ?H°f for sucrose.C) The rise in temperature of the calorimeter and its contents as a result of the reaction is 1.743 K. Calculate the heat capacity of the calorimeter and its contents.
State what these are, how they are made, and one way they can be used productively in research and one way they can be used in medical diagnostics.
You have a 48.9 g sample of water at the temperature of -60.0 degrees celcius. How much energy is required to: a) heat the ice to 0 degrees celcius
What is the approximate percent of complexed iron in a 0.1 M Fe3+ solution containing 1 M KSCN? Kf FeSCN2+ = 1.2*10^2
4 KO2 + 2 H2O + 4 CO2 4 KHCO3 + 3 O2 1.86 moles of O2 were produced.Now, How many molecules of O2 does this number of moles represent.
Nickel nitrate and potassium carbonate react to form nickel carbonate and potassium nitrate. How many milliliters of 0.55M Ni(NO3)¬2 are needed to react with 85 mL of 0.25M K2CO3?
If it solidifies isothermally at 55 K below the equilibrium (normal) melting point of Cd, what is magnitude of the energy transferred to the plate
The Ksp for Cr(OH)3 is 1.6 x 10?30. What is the molar solubility of Cr(OH)3 in a buffer solution with a pH of 11.5. Hint: what is the balanced reaction
In the reaction 2A -> X + Y, the initial concentrations are all 0.600 M. If the equilibrium constant is 1.20 x 10^6, what are the equilibrium concentrations
A 50.00 ml sample of water was treated as above and the I2 titrated with 0.01136 M Na2S2O3, of which 8.11 ml were required to reach the end point. Determine the concentration of the dissolved O2 in M (moles/L) and ppm (mg/L).
If 2.50 g CuSO4 are dissolved in 8.0 x 10^2 mL of 0.25 M NH3, what are the concentrations of Cu2+, Cu(NH3)4^2+, and NH3 at equilibrium
What is the theoretical yield of aspirin if 167 kg of salicylic acid is allowed to react with 123 kg of acetic anhydride?
You have 250.0 mL of a 0.56M solution of sodium acetate. How many mL of 0.50M acetic acid should be added to make a buffer of pH 4.40.
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