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You have to prepare a pH 3.45 buffer, and you have the following 0.10 M solutions available: HCOOH and HCOONa How many milliliters of HCOOH and HCOONa would you use to make approximately a liter of the buffer?
Calculate the frequency (in Hz) of light necessary to move an electron in a He+ ion from the n =2 to n =4 energy level. The Rydberg constant for a helium ion is R = 4.390 x 107 m-1
If 1.500 g of a solute having a molar mass of 125.0 g were dissolved in 35.00g of camphor, what would be the resulting freezing point of the solution.
Suppose scheme one involves the reaction of the Grignard reagent containing more carbon atoms with the carbonyl compound containing less carbon atoms and scheme two involves the reaction of the Grignard reagent containing less carbon atoms with th..
The mixture of saltwater and ice around the ice cream bucket in the ice cream machine is at a temperature of -8.40C. What mass of sodium chloride would be found in 1,477 grams of this solution?
What is the concentration of a solution prepared by dissolving 125 g cholesterol in hexane to a final volume of 685 mL?
If 1 gallon of paint can cover a square room and ceiling with walls that are 9.36 feet high and 9.36 long, what is the thickness of the paint (in micrometers)?
Write down the full Hamiltonian for a He atom moving freely in space, i.e., there is no external potential. b) Now assume there is no repulsion between the electrons
The mass of purified sample of impure benzoic acid was .630g. How would I find the percentage recovery of my impure benzoic acid? And are the numbers I got in the lab reasonably correct?
Using the information below, calculate the mass of benzene in each phase and find the total mass of benzene at the site.
a sample of a compound containing only magnesium and oxygen is found to have 194g Mg and 256g of O. What percentages of Mg and O in this compound?
A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 870 mL at 40C and a barometric pressure of 755 torr.
A balloon has a volume of 10,500 liters, and the temperature is 15C. If the temperature were -25C, what would the volume of the balloon be.
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