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Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4. (a) When 11.50 mL of 0.470 M HNO3 have been added. (b) When 65.00 mL of 0.470 M HNO3 have been added.
Write out the Michaelis-Menten model for an enzyme catalyzed reaction. State at least two assumptions that must be made for enzymes that follow the Michaelis-Menten model.
what is the mass in grams of 17.55ml of acetone? and what is the volume in milliter of 7.26g of acetone?
In a calorimeter, 10.0 g of ice melts at 0oC. The enthalpy of fusion of the ice is 334 J/g. How much heat was absorbed?
A 4.20 g nugget of pure gold absorbed 290 J of heat. What was the final temperature of the gold if the initial temperature was 25.0°C? The specific heat of gold is 0.129 J/(g·°C).
The tire is filled with dry air at sea level and a temperature of 60 degree F to 32 lb/square inch.standard sea level pressure is 101325 Pa at 0 degree C (STP).
Calculate the equilibrium concentrations of H3O^+, A^-, and HA in a 0.040 M solution of the acid, along with the pH of the solution.
what is the concentration of toluene in air produced by vaporizing 1 ml of liquid toluene into clean air to produce a total volume of 100 liters? Toluene has a molecular weight of 92
A metallic solid with atoms in a face-centered cubic unit cell with an edge length of 385 pm has a density of 6.84 g/cm3. Calculate the atomic radius of the metal.
How will the melting point of your semicarbazone derivative be affected if the derivative is not dry enough
Lithium hydrogen carbonate decomposes by heat; the reaction is represented by the balanced equation: 2LiHCO3 (s) --------> Li2CO3(s) + CO2(g) + H20 (g)
Decribe how adding a solution of KOH to the original sulfide precipitate results in the separation of Sn4 ion from the other group II cations.
According to Avogadro's law, how many liters of hydrogen are required to react with 1.9L of oxygen at STP.
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