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What is the OH- in a solution that has a pH of 1.86? Give your answer to 3 significant figures using E-notation (i.e., 1 number before and 2 after the decimal point).
Is the central carbon atom sp2- or sp-hybridization? What about the hybridization of the terminal carbons? What shape do you predict for allene?
The heat of vaporization of benzene, C6H6 , is 30.8 kJ/mol at its boiling point of 80.1 °C. How much heat is required to vaporize 128 g benzene at its boiling point ?
how many grams of sulfur are needed to react completely with 246 g of mercury to form HgS
Suppose that a fully charged lead-acid battery contains 1.50 L of 5.00 M H_2SO_4. What will be the concentration of H_2SO_4 in the battery after 2.40 A of current is drawn from the battery for 8.00 hours?
calculate the E cell when [Zn^+2] = 0.10M and [Cu^+2] = 2.0 x10^-4M. Is the reaction Spontaneous or Non- spontaneous?
Calculate the pH during the titration of 100.0 mL of 0.200 M HCl with 0.400 M NaOH. First what is the initial pH (before any NaOH is added
the growth rate drops 6 orders of magnitude and effectively reduces the crystallization rate to zero. Calculate the self-diffusion of this alloy system.
The acid-dissociation constant of hydrocyanic acid(HCN) at 25.0C is 4.9x10^-10. What is the pH of a aqueous solution of 0.080M sodium
Suppose you have made 1L worth of a mixture of methanol and water, by mixing 3 parts of methanol and 2 parts of water by mass. Assume for simplicity that the volume of the mixture is exactly equal to the sum of the volumes of the ingredients (whic..
The gaseous product of a reaction is collected in a 25.0-L container at 27 degrees C. The pressure in the container is 300.0 kPa and the gas has a mass of 96.0 g. How many moles of the gas are in the container.
Use the molarity of the EDTA solution and the average volume of EDTA added to calculate the average number of moles of EDTA required for the titration.
A student mixes 347 mL of water and 254 mL of 8.70 x 10-5 M greenfood dye solution. What is the concentration of this new dilute solution of green food dye?
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