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given that the delta h of vaporization 3500 kjmol and delta h of sublimation 4000 kjmol calculate the triple point of
1 find the ph of a 0050 m hclo4 and b 0050 m hclo4 plus 0050 m hbr2 what concentration of ca2 must be added to 0010 m
the inside diameters of the larger portions of the horizontal pipe depicted in the figure below are 242 cm water flows
a model rocket launches with initial net upward accelration 15g g is 98 this accelaration is maintained for 3 seconds
which of the following is true of the internal energy of a system and its surroundings during an energy exchange with a
draw the mechanism curvy arrows for the formation of the carbocation intermediate formed from reaction of no2 with
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