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In the titration of 50.0 mL of 1.0 M methylamine, CH3NH2 (Kb = 4.4 10-4), with 0.50 M HCl, calculate the pH under the following conditions.
(a) after 50.0 mL of 0.50 M HCl has been added
(b) at the stoichiometric point
Explain why does ATP synthesis occur in the presence of Rotenone ( an inhibitor of one the reactions in the electron transport system.) if succinate is combined but not ATP synthesis doesn't occur if L-malate is added?
A 1.994g sample of ethanol, CH3CH2OH is combusted in a bomb calorimeter. The temperature of the calorimeter increases by 10.91. If the heat capacity of the bomb is 615.5j/k and it contains 1.150kg of water, what is the enthalpy chnge per mol of et..
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.049 M in NH4Cl
how many grams of sodium lactate should be added to 1.00 of 0.150 lactic acid to form a buffer solution with 4.00?
The block of iron is smaller than the block of aluminum. Both objects have the same volume.
Oxygen is a common oxidizing agent in nature. What changes in the oxidation number of oxygen must occur if it is to be an oxidizing agent
1. consider the sn2 reaction of butyl bromide with oh- ion.ch3ch2ch2ch2br oh- ? ch3ch2ch2ch2oh br-assuming no other
80.0 of is initially at room temperature 22. a chilled steel rod at 2 is placed in the water. if the final temperature
indicate the compartment (A or B) that will increase in volume for each of the following pairs of solutions separated by a semipermiable membranes
a 250.0ml sample of air at 100.0k is warmed to 200.0k at constant pressure. what is the volume of the air sample at the new temperature?
DRAW a flow chart to show how triphenylmethanol is purified by extraction. Indicate which layer contains the product.
The volume of a syringe is 0.5 mL and the pressure is 3 atm, when the plunger is at the bottom of the syringe. The syringe is then sealed and forced to the 10 mL mark. What is the pressure inside of the syringe?
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