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Explain the pKa of acetic acid is 4.75. Suppose acetic acid is found in a solution with a pH of 4.75 which of the following?
A. The acid exists predominately in the prorogated form.
B. The acid exists predominately in the deprotonated form.
C. The concentrations of the prorogated and the deprotonated form of the acid are equal.
The Ka for boric acid is 7.3 x 10-10. What is the pKa of boric acid?
What percent of bacetrial cell wall will be hydrolyzed at the end of 3 minutes assuming product formation is in 1st order of reaction? b) What will be a concentration of hydrolyzed product at the end of 4 minutes?
In one city, a balloon with a volume of 6.0 L is filled with air at 101 kPa pressure. The balloon in then taken to a second city at a much higher altitude
A compound contains 40.00% carbon, 6.67% hydrogen, and 53.33% oxygen. Determine the empirical formula of the compound. Give the chemical formula for calcium phosphate.
the following reaction has an equilibrium constant of k 1.6x10-21 at 298 k. the equilibrium constant increases to k
If 72.4 kJ of heat is supplied to a 862 g block of metal, the temperature of the metal increases by 9.3°C. Calculate the specific heat capacity of the metal in J/g·°C.
cunaturally occurring consists of 2 isotopes 63cu and 65cu and has a relative atomic mass ar of 63.55 considering this
What quantity of heat is required to vaporize 151 g. of benzene C6H6 at its boiling point 80.1 degrees celsius? Heat of vaporization = + 30.8 kj/mol.
A 25.0 mL sample of unknown hydrochloric acid solution is titrated with 0.100 M NaOH. The equivalence point was reached after the addition of 23.5 mL NaOH. Find the concentration of the unknown HCl(aq).
A compound containing xenon and fluorine was prepared by shinning sunlight on a mixture of X2 (0.526 g) and excess F2 gas. If you isolate 0.678 g of the new compound, what is the empirical formula
Calculate the number of moles Cl of atoms in 3.61×10^24 formula units of magnesium chloride,MgCl2
Organic Chemistry-In the mass spectrum of butylbenzene, the base peak occurs at m/z
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