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A solution of the weak acid formic acid (HCOOH) has a pH of 2.14 when the concentration of formic acid is 0.30M. What is the numerical value of the acid ionization constant (Ka), and what is the percent ionization of the formic acid?
In the lab you make 10-5.5 M solutions of HCl and of NaOH using pure distilled deionized water. What would be the pH after the solutions equilibrate with the atmosphere
what is thenbsptotal energy of the photons detected in a period of one hournbspif a radiation detector is capturing 8 x
An electron in a hydrogen atom is excited with electrical energy to an excited state with n= 2. The atom then emits a photon. What is the value of n for the electron following the emission
If .050 moles of HA were dissolved in 1L of water, calculate the concentration of [HA], [H30+], and [A-] in the solution at equilibrium. What is the pH? Ka=7.94 x 10^-7, equivalence point ~ 9 mL, pH at equivalence ~ 9]
The electophilic addition reaction of conjugated dienes that occurs at low temperatures and/or short reaction times is said to be under what? A)thermodynamic control B)kinetic control C)1,2-additon control D) 1,4-addition control
What is the final concentration of copper in the flask b)what is the uncertainty in the value of the copper concentration?
When 7 mL of a solution containing 2.5 M AlBr3 is diluted to 30 mL, a dilute solution is formed. What is the Br- concentration in 15 mL of the dilute solution?
If the reduction of Cl2 to 2 Cl has a potential of 1.3583 V and the reduction of K+ to K has a potential of - 2.95 V, write the reaction between the species that is thermodynamically favored. Please explain reasoning.
which one has the larger standard entropy value at 25C(assume thesame molar amount in the comparison) explain the reason why
When 1.33 mol of HCl reacts with excess MnO2, how many moles of Cl2 form?
A solution has a hydroxide-ion concentration of 9.22 × 10-5 M. What is its hydronium-ion concentration
The artificial sweetener aspartame is a dipeptide made from two amino acids, aspartic acid and phenylalaline. Write two possible structures for this peptide.
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