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a sample of gas has a mass of 0331g its volume is 0225 l at a temperature of 55c and a pressure of 886 mmhg find its
are all reactants andor products in a chemical reaction necessarily represented in the equilibrium expression why or
acid rain causes an increase in the ph a measure of acidity in bodies of water it has been proposed that calcium
given the following experimental data find outa what is the rate law of the reactionb what is the rate constant for the
a buffer is made by adding 024 mole acetic acid and 016 mole sodium acetate in 1l watera what is the ph of the buffer
the ka of formic acid hcooh is 18x10-4 what is the ph of 035 m solution of sodium formate
molarity and stoichiometry-omegadirections nbspusing the definition of molarity the given balanced equations and
1 below is a generalised depiction of a reaction between a carboxylic acid in this case butanoic acid and an alcohol
what ph range would you expect the equivalence point to lie for the titration of a weak base such as ammonia with a
could you please explain why two 2pz or two 2px orbitals form a sigma bond whereas two 2py orbitals form a pi
hydrogen bonds vary in strength from about 4 to 40 kjmol given that the hydrogen bonds between water molecules are at
dihydrogen monoxide or its more common name water is an interesting and unique substance that has virtually
answer the following acid-base questions as they apply tonbsppotassium hydroxidenbspandnbsphydrobromic acida
arrange the following in order of ease of liquefaction ccl4 ch4 and cf4 would them all be the same as they are all
the average rate for the loss of ammonia is found to be 330 x 10-4nbspm min-1 calculate the average rate for the
the enthalpy of combustion of gasoline is about 45 kjg the amount of energy needed to heat 1 g of water from 20 degc to
what is the half-life ofnbspbismuth-210nbspifnbsp941nbspdaysnbspare required for the mass of a sample
gallium-67 is used medically in tumor-seeking agents the half-life ofnbspgallium-67nbspisnbsp782nbsphours if you begin
what should the molar concentrations of benzoic acid and sodium benzoate be in a solution that is buffered at anbspph
acetic acid ch3cooh is the component in vinegar that gives it its acidity it is a weak acid and only partly ionizes
for the reaction 2so2 o2 ----gt 2so3 the initial rate 250 x 10-2 m s-1 when so20 0570 m and o20 0410 m if the rate
powdered activated carbon is often added at water treatment plants to control concentrations of geosmin which is a
discuss how you think chemistry of hazardous materials class will benefit you as a first
the average kinetic energy for a volume of gas can be found by multiplying the following 32 temperature in kelvin and
now consider 1 g of nuclear fuel a common fission reaction is235u nbsp1n rarr91kr nbsp142ba 3nbsp1nthe masses of these