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two solutions namely 500ml of 50 m hcl and 500 ml of 50 m naoh at the same temperature of 221 c are mixed in a
2 drops of methyl orange indicator are added to a 250 ml sample of strontium hydroxide a 0073 m hcl solution titrant is
you are gien a group i unkown and are told that it contains only one cation you treat it with hcl and get a white
1 urea has a mass percent composition of 20 c 671 h 4665 n and 2664 o a solution prepared by dissolving 162 g of urea
1 at 20 c the vapor pressure of c6h6 is 75 torr and that of c7h8 is 22 torr assume that they form an ideal solutiona
100g of orange juice is said to contain about 50mg of ascorbic acid how much of a 2e-4m dcpip titrant should be
in lab we vaporized a sample of acetone and measured the volume change of ice that was formed during the vaporization
given that the pka of h2so4 is -9 and that hno3 is -14 explain why nitration occurs more rapidly in a mixture of
write the electron configuration and shell diagram for each of the following elements a magnesium b arsenic c
in a particular photoelectron spectrum using 2121 ev photons electrons were ejected with kinetic energies of 1001 ev
the ionization energy of xe5p and o2p electrons are 121 ev and 136 ev respectively calculate the energies and
a piece of paper is spotted with a solution containing a mixture of 2 components a and b the chemical affinity of a for
an ion exchange column is used to separate several similar proteins these proteins have the exact same sequence except
an interesting enzyme 56 kda is used in catalytic amounts very small to cleave a membrane protein 65 kda into two
a mixture of 3 peptides a kfts b nels c gdsf were separated using an anion exchange column at ph 8a list the order of
an ion exchange column is used to separate single-stranded polynucleotides at ph 2 a gradient of increasing salt
the three gases n2 o2 and no are in equilibrium the formation of no is endothermic write the equation for the
how many moles of sulfur trioxide are formed from 3 moles of sulfur dioxide using the given balanced equation 2 so2 o2
according to the equation for the balmer line spectrum of hydrogen a value of n3 gives a red spectral line at 6563 nm a
sodium hypochlorite naclo is the active ingredient in bleaches calculate the ratio of the concentrations of clo and
67 nitrogen from a gaseous phase is to be diffused into pure iron at 675 c if the surface concentration is maintained
if 500 ml of hcl require 478 ml of 09581 m naoh to just consume the hcl what is the concentration of the
two identical beads each have a mass m and charge q when placed in a hemispherical bowl of radius r with frictionless
how much 10 moll hcl would you need to add to 1 l of an imaginary buffer of 010 moll to change the ph from 68 to 60
an element forms a body-centered cubic crystalline substance the edge length of the unit cell is 287pm and the density