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Ethanol is a possible fuel. Use average bond energies to calculate delta Hrxn for the combustion of ethanol.CH3CH2OH(g)+3O2(g)->2CO2(g)+3H2O(g)
What is delta Hrxn
calculate how many protons are required to pass through the xeno-FoF1-ATP synthase complex to synthesize one ATP
What mass of solid sodium formate (of MW 68.01) must be added to 110 mL of 0.55 mol/L formic acid (HCOOH) to make a bu?er solution having a pH of 3.84? Ka = 0.00018 for HCOOH
Unknown Q is determined to have a molecular formula of C6H12O. Q is not optically active, and passing it through a chiral column does not separate it into enantiomers.
Compute the change in temperature when 2 g of sodium chloride is dissolved in 270.0 mL of water initially at 25 C. The heat capacity of water is 4.184 J/mL/K. Neglect the heat capacity of the NaCl.
Write the IUPAC name of the expected product(s) for the oxidation of each of the following compounds. A. 2-pentanol
Electrical devices are often rated with a voltage and a current for example 120 V 5S batteries however are only with a voltage for example 1.5V why?
A 8.0 L sample at 25 °C and 1.00 atm of pressure contains 0.5 moles of a gas. If an additional 0.75 moles of gas at the same pressure and temperature are added, what is the final total volume of the gas?
Calculate the pH of this solution? if we want to lower the pH by one unit of this solution then How many mL of 0.1 M H 3 PO 4 should be added to this solution?
Determine the volume of 0.210 M KOH solution required to neutralize each of the following samples of sulfuric acid. The neutralization reaction is: H2SO4(aq)+ 2KOH(aq) â†' K2SO4(aq)+ 2H2O(l)
How many grams of sodium lactate (NaC3H5O3 ) should be added to 1.46 L of 0.150 M lactic acid (HC3H5 O3, Ka = 1.4 x 10-4) to form a buffer solution with pH = 4.12
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure.
What is the pH of a buffer prepared by dissolving 0.238 g of NaNO2 in 2.50 L of 1.5 x 10-3 M HNO2, Ka (HNO2) = 6.0 x 10-4?
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