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C6H12 + 9O2 ----> 6CO2 + 6 H2O 42 grams of cyclohexane burns in excess air to from carbon dioxide and water. How many grams of carbon dioxide and of water vapor are produced?
an oxygen-oxygen bond has an enthalpy of 498 kj/mol , and the standard enthalpy of formation of CIO2(g) is DH f=102.5 kj/mol , use Hess's law to calculate the value for the enthalpy of formation of CIO (g)
Show why the transfer of heat from an object with lower temperature to an object with higher temperature violates the second law of thermodynamics.
solution has an osmotic pressure of 3.80torr at 35?C. What is the molar mass of the protein?
At 0.0 degrees C, if the volume of air is 1.7 mL and the pressure of the atmosphere that day is 695 mmHg, what is the number of moles of air?
What is the pH of a buffer solution prepared from 5.15g of NH4NO3 and 0.10L of 0.15M NH3? What is the new pH if the solution is diluted with pure water to a volume of 500mL
A laser pulse with wavelength 555nm contains 4.40mJ of energy. How many photons are in the laser pulse.
determine the emf of a fuel cell that oxidizes hydrogen according to the reaction2h2 g o2 g --gt 2h2o lunder the
Derive an expression for the partition function for a molecule with two states separated by energy hν (i.e. ε1 = 0 and ε2 = hν). If we consider a canonical ensemble of N such molecules, derive expressions for the total internal energy and the heat..
If none of the available reagents can be used for this purpose, then identify another reagent from the table that could be used. For each reagent you've identified, write down a balanced chemical equation for the reaction that occurs.
Calculate the freezing point and boiling point of a solution of 383 g of glucose dissolved in 400 g of water
MgNH4PO4*6H20 loses H20 stepwise as it is heated. Between 40 and 60 degrees C the monohydrate is formed, and above 100 degrees C the anhydrous material is formed. What are the phosphorus percentages of the monohydrate and of the anhydrous material..
A solution of NaOH(aq) contains 8.7 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.
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