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a certain first order reaction is 47 complete in 45 seconds what are the values of the rate constant and the half-life
how much energy in kilojoules is released when 225g of ethanol vapor at 970 celsius is cooled to -100 celsius ethanol
what ions are present in a solution of hcl theoretically which of these ions will affect the equilibrium of co cl2 and
the rate constant for the second order reaction is 80 m s at 10 degrees c starting with a concentration of 86 m
what is the activation energy for a reaction if its rate is found triple when the temperature is raised from 615k to
draw a tetra-peptide that fphd at ph 20 clearly indicate with a circle what groups would be charged if the ph was
a nucleoside is composed of ribose that is linked to the nitrogen atom of the base which carbon on the sugar is linked
when heated cyclopropane is converted to propene rate constants for this reaction at 470 deg c and 510 deg c are k 110
the molar heat of combustion of ch4 is 882 kjmole how many kj of heat are produced when 675g of ch4 are
describe a non-chemical application of le chateliers principle what is the system in equilibrium what is the stress how
the standard enthalpy change for a process is 601 kjmol what is the minimum value for the standard entropy change if
you have discovered a basic amino acid its carboxyl group pka is 192 its amino group pka is 1003 its side chain pka is
when you burn methane it unites with oxygen to form carbon dioxide and water write an equation to balance the reactants
if 0260 moles of a monoprotic weak acid ka9010-5 is titrated with naoh what is the ph of the solution at the
at a certain temperature the solubility of strontium arsenate sr3aso42 is 00620 gl what is the ksp of this salt at this
the ksp of mercuryiihydroxide hgoh2 is 36010-26 calculate the solubility of this compound in
at 22ccelsius an excess amount of a generic metal hydroxide moh2 is mixed with pure water the resulting equilibrium
if the anhydrous compound ac in the preceeding problem has a molar mass of 160gmol what are the water crystallization x
at a certain temperature the solubility of strontium arsenate sr3aso42 is 00620 gl what is the ksp of this salt at
1 what volume of 60 m sulfuric acid is required for the preparation of 5000 ml of 030 m solutiona 40 ml b 100 ml c 30
what will the units of the following rate constant if the rate constant is expressed in moll min rate k
a write a balanced net ionic equation to describe adding excess nh3 to a basic solution containing ni2b write a
a 0140-mole quantity of cocl2 is added to a liter of 120m nh3 solution what is the concentration of co2 ions at
a certain indicator ha has a ka value of 0000040 the protonated form of the indicator is red and the ionized form is