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Calculate the pH of a solution made by adding 11.0 g of sodium formate, NaHCOO, to 400. mL of 0.65 M formic acid, HCOOH. Hint what kind of solution is made?
The Ka for HCOOH is 1.8 x 10-4 M. As usual, report pH to 2 decimal places.
A solution is prepared by dissolving 3.65 g of an unknown nonelectrolyte in 15.00 g of cylcohexane (tf = 6.6 oC and kf = 20.0 oC/m).
Calculate the work (in kJ) when 3.00 moles of methane react with excess oxygen at 332 K: CH4(g) + 2O2(g) ? CO2(g) + 2H2O(l)
Assume that the partition coefficient, K, for partitoning of compound A between diethyl ether and water is 3; that is, A preferentially partitions into ether.
Agas company in Massachusetts charges $1.30 for 15.0 cubic ft of natural gas. (a) Convert this rate to dollarsper liter of gas. (b) It takes 0.304 cubic ft of gas to boil aliter of water, starting at room temperature
A sample of hydgrogen gas, H2, has a volume of 8.56L at a temperature 0C and a pressure of 1.5 atm. Assuming the gas behaves ideally: how many moles of H2 are present in this gas sample
an aqueous solution is 48.3 by mass hydroiodic acid hi. the density of this solution is 1.6 gml at 20 c. how many grams
What will the pH of the solution be when 0.1316 L of 2.1 M NaOH are added to the 421 mL of 0.501 M carbonic acid? How many mL of the 2.1 M NaOH are needed to raise the pH of the carbonic acid solution to a pH of 6.019?
Water vapor can be maintained at 100 oC and 2 atm pressure for a time; it will spontaneously revert to a liquid. calculate delta H, delta S, delta G for g->l. Assume vapor behaves ideally and liquid is basically imcompressible.
Draw the crystal-field energy-level diagrams and show the placement of d electrons for the following: [CrF6]-3
Calculate the activity for CS2 at mole fraction CS2=.722 for a Raoult's Law standard state using the following data: PCS2=446.9 Torr, and P*CS2=512.3 Torr
what is the term for a solution whose concentration has been accurately determined usually three or four significant digits? normal solution standard soluatoin stock soluation
The extract was filtered and placed in a 50.00ml volumetric flask which was filled to the mark. 5.00ml of the solution was transferred to a second 50.00ml volumetric flask. The diluted solution from the second volumetric flask was found to contain..
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