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in a carbonate buffer at ph 73 what species of carbonate form the buffer what are the relative amounts and does the
the solubility product constant ksp for the dissolution of caf2 as represented by the chemical equation is 34 x 10-11
500 g sample of aluminium pellets specific heat capacity 089 j oc-1 g-1 and a 1000 g sample of iron pellets specific
concentrated sodium hydroxide naoh is 194 m has a density of 154 gml and is a strong electrolyte what is the molality
what is the total pressure when 100 l of methane ch4 at stp and 400 l of oxygen at stp are mixed in a 120-shyl
estimate the enthalpy change for the combustion of one mole of ethanol c2h5oh using average bond dissociation
a buffer solution of a weak acid and its salt had a ph of 551 when the acid was 0221 m and the anion was 0928 m
the first ionization potential of potassium is 419 kjmol if uv-shyradiation with wavelength 250 nm is used to eject
researchers analyzing an unknown hydrocarbon with chemical formula cxhy found that 225 grams of o2g were required for
producing hydrogen atoms from h2 molecules requires 436 kjmol to break h-shyh bonds for the longest-shywavelength
a chlorine-oxygen compound is found to have a chlorine to oxygen mass ratio of 1109 which of the following chlorine to
3-ethylbenzoic acid draw the molecule by placing atoms on the grid and connecting them with bonds include all hydrogen
data cgraphite o2g gt co2g h -3935 kj h2g 12o2g gt h2ol h -2858 kj ch3ohl 32o2g co2g 2h2ol h -7264 kj using the
ag electrode in 10 m ag aq and cu electrode in 10 m cu 2 aq what is the cell potential when the solutions are altered
which is a correct iupac name for ch3och2ch2och3 a 14-dioxane b ethylene glycol dimethyl ether c 14-dioxapentalene d
hydride reduction of aldehydes and ketones is a a one-step reaction involving the h- ion b one-step reaction involving
balance the redox reaction below assuming that it takes place in an acidic aqueous solution mno4 - aq so3 2- aq ---gt
briefly discuss the theories and important experiments that led to the determination that light is both a wave and a
arrange each set of atoms in order of decreasing ionization energy ie1 and decreasing atomic radiuscl k s ca i will
write the set of 4 quantum numbers for the following a the 29th electron of ga b the 55th electron of cs c the last
write the full and condensed ground state electronic configuration and draw the orbital diagram for the following a
which is a principal product of this reaction ch3ok ch33cbr reg a ch3occh33 b ch2cch32 c ch3och3
50ml of 01m aquesous solution of some organic compound was brought in contact with 10ml of octanol at 20c after
a solution of dimethylaminedimethylammonium buffer contains 0246 m ch32nh and 209 m ch32nh2cl calculate the ph of the