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Calculate the pH at the equivalence point for the titration of 0.190 M methylamine (CH3NH2) with 0.190 M HCl. The Kb of methylamine is 5.0× 10-4.
Calculate the weight of potassium chlorate required to prepare 380 mL of wet oxygen collected over water at 20 Celcius and 750 mm of Hg.
Calculate the amount of heat released when 5.3 moles of steam at 100 degrees celscus turns to water at the same temperature
What is the pH of a solution that results from diluting 0.30 mol acetic acid (CH3CO2H) and 0.20 mol sodium acetate (NaCH3CO2) with water to a volume of 1.0 L?
A constant pressure calorimeter having a heat capacity of 74.2 kJ/K is used to measure the energy released from burning a compound in excess oxygen to form CO2(g) and H2O(l).
Consider the boron trifluoride molecule, BF3, that results from the bonding of three fluorine atoms and one hybridized boron atom. A) The nub that is seen just below the boron central atom is one of the ends of a hybrid sp2 orbital.
A certain weak base has a Kb of 7.80 × 10-7. What concentration of this base will produce a pH of 10.16
how do you go from cyclopentane to 2 chloro cyclopentanol. specifically the formation of the the double bond
The total precipitate was dissolved in HCl + HNO3. When the solution thus formed was treated with excess NaOH followed by H2O2, a colorless solution and a reddish brown precipitate were formed. The precipitate was found to be soluble in HCl, H2SO4..
For the concentration of hydroxyl radical of 7.5E06 molecules/cm3 and a carbon monoxide concentration of 18 ppm, calculate the rate of its reaction with atmospheric carbon monoxide at 11 degrees C.
Which of the following is an experimental fact that valence bond theory cannot explain, but molecular orbital theory can? A) the paramagnetism observed for O2
Consider the following qualitative analysis scenario and then classify what type(s) of qualitative analysis principle is/are being used. More than one choice may be correct.
What is the pH of a solution that has a formic acid (HCHO2) concentration of 0.39 and a potassium formate (KCHO2) concentration of 0.12? The Ka for formic acid is 1.7 x 10-4.
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