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write the kb reaction of hypochlorite oct- given theat the ka value for hocl is 30x 10 -8 calculate kb for
a toy train engines 25kg is moving 025ms when it collides with a car 16kg moving 015 ms in the same direction and they
a 0040 m solution of a monoprotic acid is 14 percent ionized calculate the ionization constant of the
a sample of rock is found to have a 235u207pb ratio of 1 to 15 from its minerology we know that it contained no lead at
a monatomic ideal gas expands adiabatically from an initial volume of 72 l and an initial temperature of 350 k until
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
a coil having l014 h r12 is connected across a v110v f25hz line compute a power factor and
two identical parallel-plate capacitors each with capacitance c are charged to potential difference v and then
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
a radio station is allowed to broadcast at an average power not to exceed 26 kw if an electric field amplitude of
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
on a cold winter day the outside temperature is -20degc and the inside temperature is maintained at 20degc there is a
estimate the radiation pressure due to a 100-w bulb at a distance of 70 cm from the center of the bulb assume that
100g of orange juice is said to contain about 50mg of ascorbic acid how much of a 2e-4m dcpip titrant should be
a high-energy pulsed laser emits a 15-ns-long pulse of average power 26times1011 w the beam is 23times103 m in radius
in lab we vaporized a sample of acetone and measured the volume change of ice that was formed during the vaporization
in an em wave traveling west the b field oscillates vertically and has a frequency of 870 khz and an rms strength of
two resistanceless rails rest 37 cm apart on a 40 degree ramp they are joined at the bottom by a 055 ohm resistor at
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