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Liquid tetraethyllead reacts according to the balanced equation. When 419 g of CO2 is produced, calculate the sign and magnitude (kJ) of the heat produced.
Enthalpy (kJ)?H = -12552.8Molar MassPb(C2H5)4 323.45O2 31.999PbO 223.20CO2 44.001H2O 18.015
Write the complete ionic equation for the reaction that occurs when a few drops of HCl are added to the buffer.
What is the energy uncertainty associated with a short pulse of laser light that lasts for only 4.8 femtoseconds (fs)? Suppose the low energy end of the pulse had a wavelength of 727 .
If the Ka of a monoprotic weak acid is 1.4 × 10-6, what is the pH of a 0.33 M solution of this acid
Generation and use of a standard curve and serial dilutions, This lab provided a 100mM Glucose standard solution which you are required to dilute with water to give final concentrations of 0,0.4,0.8,1.2,1.6 and 2.0 mmol/L glucose in a final volume..
Write balanced equations for the following reactions: preparations fo the semicarbazone of cyclopentanone, preparations of the 2,4-DNP of benzaldehyde, tollen's test for formaldehyde, idoform reaction with acetophenone.
A pound of coffee beans yields 50 cups of coffee (4 cups = 1 qt). How many milliliters of coffee can be obtained from 5 g of coffee beans?
Which of the following is false? A. Molecules with strong intermolecular forces have higher surface tension. B. Molecules with strong intermolecular forces have higher viscosities.
Calculate the cell potential (emf) for a galvanic cell at 298 K composed of a standard aluminum electrode (Al metal and Al 3+ ions at 1.0 M) and a standard cadmium electrode (Cd metal and Cd 2+ ions at 1.0 M.)
Calculate the overall relative standard deviation, the relative standard deviation of the method, and the relative standard deviation of the sampling process.
The pH of a bicarbonate-carbonic acid buffer is 8.30. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
What will happen to the equilibrium as OH- ions are added?
A reaction 3A2+ + 2B --> 3A + 2B3+ is used to make a battery. The standard Gibbs free energy change for the given reaction is -690 kJ. What is the standard potential (E ) for the battery.
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