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Complete hydrolysis of 50 mM methyl butyrate in an enzyme (ie esterase)-catalyzed reaction is carried out in a 50 mM KCl solution buffered by 0.15M Tris-Cl, pH 8.1. What will the pH be at the end of the reaction?
Assuming the solution has a heat capacity of 4.18 J/°C · g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl? Zn (s) + 2 HCl (aq) ZnCl2 (aq) + H2 (g)
the density of aluminum is 2.7 gcm3. an ecology-minded student has gathered 126 empty aluminum cans for recycling. if
The dienophile used by Woodward and coworkers as part of total synthesis of the choleasterol might have ract at either of the alkene double bonds. Jusitfy the formation of the observed Diels-Alder adduct.
what is the ground state electron configuration of atomic al? what electronic states are possible with this electron
a 5.08-g chunk of potassium is dropped into 1.06 kg water at 24.0degc. what is the final temperature of the water after
the specific heat of toluene c7h8 is 1.13 jg k. how many joules of heat are needed to raise the temperature of 50.0 g
Identify each of the following substances as an element, compound, solution, or heterogeneous mixture
When 50 grams of iron absorbs 1.0 kJ of heat its temperature increases by forty degrees celsius. What is the molar heat capacity of iron?
If Ka is 1.75E-5 for acetic acid, calculate the pH at one-half the equivalence point and at the equivalence point for a titration of 50ml of 0.100M acetic acid with 0.100M NaOH?
the sandals in disintegrations per minute per gram? Assume the original activity was 15.3 disintegrations per minute per gram.
A bunsen burner uses the combustion of butane (c_4_H_10_) as a means to provide heat. If during a laboratory experiment the class uses 875 grams of butane. how many grams of each product will be produced?
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