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The density of liquid water at 0 degrees C is 0.9987 g/cm cubed; the density of ice at this same temperature is 0.917 g/cm cubed.Calculate the volume occupied at 0 degrees C by 100. g of liquid water and by 100. g of ice. Calculate the percentage increase in volume when 100. g of water freezes at 0 degrees C.
Calculate the pH at each point listed for the titration of 25.00 mL of 0.1000 M formic acid with 0.1000 M KOH. The points to calculate are Vb = 0.00, 12.50 and 25.00 mL
how would you prepare 100ml of 0.5M NaOH? Calculate the mass of NaOH needed, and describe the procedure and glassware you would use.
Provide a stepwise mechanism for the reaction, showing all electron movement using the curved arrow convention. Sketch a qualitative energy level diagram for the mechanism labeling all relevant points.
Which of these ions best represents the conjugate acid in a "phosphate" buffer at physiological pH? Explain. H2PO4^-, HPO4^2-, PO4^3-
Calculate the entropy change for 0.5 mol of an ideal gas confined in 2.0L, which expands when the stopcock is opened, and the gas comes in contact
A gas occupies a volume of 925mL at 30 degrees celcius and 1.2atm. What volume will it occupy at STP?
If 0.628 moles of a substance weighs 77.3 g, what is the molar mass of the substance, in units of g/mol?
on a beautiful summer day a group of friends have a picnic. of course there is a six pack of beverage on ice for
calculate the pH and concentration of all species present assuming that the activity coefficients are equal to 1.0 for all species
Calculate the mass of emitted into the atmosphere upon accelerating the from 0.0 to 67.0 . Assume that the required energy comes from the combustion of octane with efficiency.
In the qualitative cation analysis procedure, Bi3+ is detected by the appearance of a white precipitate of bismuthyl hydroxide, BiOOH(s): BiOOH(s) --->
what is the change in enthropy for this process in kJ/K*mole. The atomic mass of oxygen is 16.00.
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