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(a) What is meant by the terms acidic oxide and basic oxide?
(b) How can we predict whether an oxide will be acidic or basic based on its composition?
Determine the molarity of a solution of twenty grams of Ammonium bromide, NH4Br, in enough water to produce 132 mL of solution?
The antibiotic paromomycin (P) forms a complex with a particular 27-nucleotide RNA construct (R). Dissociation of this complex can be described schematically (in aqueous solution) as: RP R + P Kd= .520 ..
a metal object with a mass of 19g is heated to 96 degrees celsius then transferred to a calorimeter containing 75g of
How much PV work is done in kilojoules and what is the value of ^E in kilojoules for the reaction of 6.50g of acetylene at atmospheric pressure if the volume change is -2.80L
a patient needs to take 625 mg of ibuprofen twice daily. the pills in the bottle are each 250. rm mg. how many pills
aloh3 3hcl ---gt alcl3 3h2odetermine the moles of acid neutralized if a tablet contains 0.200 mol
In the spectrum of atomic hydrogen, a violet line is observed at 434nm. Determine the beginning and ending energy levels of the electron during the emission of energy that leads to the spectral line.
What observed rotation is expected when a 1.10 M solution of (R)-2-butanol is mixed with an equal volume of a 0.550 M solution of racemic 2-butanol,
Calculate the molarity of each of the following solutions 20.0 g NaCl in 1.0 L H2O
A gas expands and does P-V work on the surroundings equal to 259 J. At the same time, it absorbs 216 J of heat from the surroundings. What is the change in energy of the system?
Draw a rough sketch of the energy profile for each of the following cases. a. E = +10 kJ/mol, Ea = 25 kJ/mol b. E = -10 kJ/mol, Ea = 50 kJ/mol c.
A 4.5 g sample of LiCl at 25 degrees Celsius dissolves in 25 mL of water also at 25 degrees Celcius. The final equilibrium temperature of the resulting solution is 60.8 degrees celsius. What is the enthalpy of solution delta H subscript 8 of LiCl ..
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