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What is the pH of a 0.17 M solution of methylamine (CH3NH2, Kb = 4.4 × 10-4) at 25oC?
A. 5.71
B. 0.77
C. 2.07
D. 13.23
E. 11.93
Calculate the overall (triangle)H degrees for the reaction shown given the bond dissassociation enrgies
Treatment of the lipids with the enzyme lipase can be used to hydrolyze fatty acid ester linkages Treatment with glycosyl hydrolase enzymes can be used to hydrolyze glycosidic bonds or other acetal/ketal functionalities
Use this information to estimate the X-X (single-)bond energy in the X2H4 molecule.
If the initial concentration of A2X is 2.00 M and 15.0% of the A2X vapor is dissociated when equilibrium is reached, what is the value of the equilibrium constant for the reaction?
reacts completely with a volume of F2(g) to produce 2.0 L of ClF5. what volume of F2(g) reacted completely?
Molarity of sodium carbonate, How many grams of primary standard grade sodium carbonate are necessary to prepare 2.00 L
If the extinction coefficient of cobalt (II) ion is 5.0, what would the absorption of the solutioni in 2-a be in a 1.00cm cell
Methanol (CH3OH) can be made by controlled oxidation of methane. CH4(g) 1/2 O2(g) ? CH3OH(g) (a) Calculate ?H° and ?S° for this reaction. (b) Calculate ?G° at 298 K. (c) Calculate the temperature at equilibrium.
If there are initially 7.21 grams of the compound dissolved in 110.0 mL of water, how many grams will remain in the aqueous layer after extraction with one 30.0 mL portion of ether?
What are the concentrations of H2SO4 and H2SO3 in a 25ml solution titrated with .1M NaOH. The first endpoint is reached after 37.89ml of NaOH are added (pH=7) and the second endpoint is reached after 43.57ml of NaOH are added (pH=9.8).
How many grams of water can be cooled from 34°C to 26°C by the evaporation of 81 g of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g. The specific heat of water is 4.18 J/g·K.)
when 3.02g NH4Cl solid was dissolved in 20.05 ml water the temperature of the water dropped from 19.8 degrees celcius to 9.1 degrees celcius
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