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If 3.140g of ethanol is burned completely in a bomb calorimeter at 298.15 K, the heat produced is 92.82kJ. 1) Calculate delta H_combustion for ethanol at 298.15 K. 2) Calculate delta H_f for ethanol at 298.15 K.
The density of silver is 10.5 g/mL. What is the mass (in grams) of a piece of silver with a volume of 23.6 mL
How many liters of gas could be generated at STP from the reaction of dilute with 15.55 of an ore that is 29.7 iron(II) sulfide by mass?
thirty pounds of methane are held in a sealed container at 100 degrees F. The volume of the container is two cu ft. Calculate the volume of gas in the container.
Please draw a detailed, arrow-pushing mechanism for the addition of HBr to trans-2-butene. 4. Please draw a potential energy diagram for this reaction
A voltaic cell is set up at 25º C with thefollowing half cells: Al3+ (0.0010 M) | Al and Ni2+(0.50 M) | Ni. Write an equation for the reaction that occurs when the cellgenerates an electric current and determinethe cell potential.
calculate the maximum number of moles, liters and grams of H2S that can form when 187 g lead sulfide reacts with 140. g water at 29.0 °C and 0.75 atm of pressure.
the set of transitions where the electron falls from a higher level to the nf = 4 state is called the Pickering series, an important series in solar astronomy. Calculate the Pickering series wavelength associated with the excited state ni = 8.
which ions in water make it 'hard'? is it possible to test for only one of these ions quantitatively in the presence of the other.
In a combustion experiment, .73g of an unknown hydrocarbon was burned in the presence of excess oxygen. This reaction produced .452 g CO2 and .087 g H2O. How many moles of carbon were in the original hydrocarbon sample
calculate E when 830.0 g of CH3OH(g) completely reacts at a constant temperature of 300 K and constant pressure of 0.95 atm.
What is the molarity of a solution made by dissolving 5.69 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.)
If a few drops of water on the outside of the hot water syringe used to dispense the 5.00 mL sample into the calorimeter well for the Kcal determination fell into the well
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