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calculate the ph of 0510 l of a 0220 m nh4cl and 0220 m nh3 buffer before and after the addition of the following
in an experiment temperature of hydrochloric acid hcl1020m solution is 234 degrees celcius the temperature of sodium
when liquid water at 0degc and 1 atm is converted to ice at 0degc and 1 atm 601 kj mol-1 of energy is released as heat
what mass of magnesium in reaction with an excess of hydrochloric acid is needed to produce 128 ml of hydrogen h2 gas
the world burns approximately 90x102 kg of fossil fuel per year use the combustion of octane as the representative
calculate the heat capacity of a calorimeter if the combustion of 4660 g of benzoic acid led to an increase in
a fuel gas containing 86 methane 8 ethane and 6 propane by volume flows to a furnace at a rate of 1450 m3 h at 15
make a schematic diagram of a cell for each of the following cell reactions indicate on the diagram the anode the
succinic acid an intermediate in the metabolism of food molecules has molecular mass 1811 amu when 1926 g of succinic
what is the velocity of a hydrogen molecule after absorbing a photon 584 nm what is the translational energy of the
exactly 100 ml of 012 m nitrous acid hno2 are titrated with a 012 m naoh solution calculate the ph for the followinga
soluble aspirin consists of sodium acetyl salicylate the sodium salt of acetyl salicyclic acid acetyl salicyclic acid
explain the following observations in terms of shifting equilibria by le chateliers principle write the equation for
what are the signs of hvap and svap for water do you expect the signs of these quantities to be the same for other
when 0200g of a high-molecular-weight compound is dissolved in water to form 125ml of solution at 25 degrees celsius
during the course of an experiment 100 ml of water is added to 250 ml of aqueous 0120 m nacl what is the concentration
the rate of the reaction of methyl ethyl acetate with hydroxide to form acetate ion and ethanol as shown in the
the rate of a first order reaction is followed by spectroscopy monitoring the absorption of a colored reactant the
for co2 one of the major absorptions of ir radiation occurs at the wavenumber of 2350cm-1 what is the energy
the i-i bond distance in i2 gas phase is 267pm in the i3 ion is 268pm and in i3- is 290pma draw the lewis structures
prepare a molecular orbital energy level diagram for no showing clearly how the atomic orbitals interact to form mosb
identify the major product in the monotitration of the following-a p-nitrotolueneb o-nitroanisolec phenyl benzoated
in the periodic table the element hydrogen is sometimes grouped with the alkali metals and sometimes with the halogens
what is the normality of a solution of koh if 4518 ml are required to neutralize 03 g pure oxalic
ammonia nh3 can be commercially manufactured using a variety of different processes feedstocks for these various