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10 M solution of chloroacetic acid, ClCH2CO2H, has a pH of 1.95. calculate Ka for the acid.
25.75 mL NaOh solution was used to titrate 20.00 ml of 0.4992 M oxalic acid solution. What is the molarity of NaOH solution
Tests on human subjects along the East Coast of the United States in 1965 and 1966, following the era of atomic bomb testing, revealed quantities of about 1.71 pCi of plutonium radioactivity (alpha
In an electrolysis cell similar to the one employed in this experiment, a student observed the unknown metal anode lost .206g while a total volume of 84.90mL of H2 was being produced. The temperatur
In a coordination compound, which ion would you expect to have a higher coordination number with a bidentate nitrate group (NO3-), Co3+ or Ir3+? Why?
When 0.154g of sulfur is finely ground and melted with 4.38g of camphor, the freezing point of the camphor is lowered by 5.47 degrees Celsius. What is the molecular weight of sulfur and What is its
How many moles of NaOH are needed to react with 24.36 mL of 0.4921 M oxalic acid solution
Calculate the boiling point of a 2.97m aqueous solution of ethylene glycol, a nonvolatile nonelectrolyte.
What are the mole fractions of ethanol, C2H5OH, and water in a solution prepared by mixing 55g of ethanol with 45g of water
Calculate the molality of a solution that contains 56.5g of benzoic acid, C6H5COOH, in 350mL of ethanol, C2H5OH. The density of ethanol is 0.789g/mL.
Calculate the freezing point of a solution that contains 8.5g of benzoic acid (C6H5COOH, MW=122) in 75g of benzene, C6H6.
Referring to Table 17.1, calculate the mole fraction of Xe and its concentration in parts per million by volume.
A voltaic cell consists of Pb/Pb2+a half-cell and a Cu/Cu2+ half-cell at 25 . The initial concentrations of and are 5.10×10?2 and 1.60 , respectively. What are the concentrations of Pb2+ and C
An electric power station annually burns 3.6 107 kg of coal containing 2.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP
The annual production of zinc sulfide (ZnS) is 4.5 104 tons. Estimate the number of tons of SO2 produced by roasting it to extract zinc metal
Calculate the number of 222Rn isotopes (t1/2 = 3.8 d) at the beginning and end of 25 days. Assume STP conditions.
Calculate the partial pressure of ozone and the number of ozone molecules per liter of air if the temperature and pressure were 20.0°C and 758 mmHg, respectively.
Suppose that one needs 17.65mL of 0.1146M NaOH to titrate 25.00 mL of 0.0237M hydrofluoric acid. Assume no volume change when the salt is dissolved. Calculate the pH of the buffer.
The complete decay of 241Am involves successive alpha, alpha, beta, alpha alpha, beta, alpha, alpha, alpha, beta, alpha and beta production. Identify the 11 intermediate nuclides. What is the final
Given the parent compound, draw the mass spectrum fragment that is observed at m/z 91. Include any hydrogen atoms and the charge.
Give the products (if any) expected from the treatment of each of the following compounds with ozone followed by dimethyl sulfide.
20.00 ml of .150 M HC2H2O2 solution is titrated with .150 M NaOH. What is the pH at the equivalence point? Ka of HC2H2O2 = 1.8*10^-5.
The solubility product for Pb3(PO4)2 is 1.0 x 10^-54. write out the solubility reaction equation explaining why it is set up that way using the solubility rules or else I will not really understand
The standard entropy of ethane (C2H6, S^0 = 229 J / (mol K) ) is higher than that of ethylene (C2H4, S^0 = 219 J / (mol K) primarily because ethane has _______ accessible ________ states than ethyle
Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 1-bromopropane. Draw the chemical structure of the alkene that you could make using these reagents in a synthesis that