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150ml of 050 hcl is added to a 1000ml sample of 0200 m hno2 what is the equilibrium concentration of no2 ions ka for
a 50 turn square coil has an area 150 cm2 and is rotated with an angular speed of 800 rads in a uniform 040 t magnetic
at 10 degrees celcius the henrys law constant for chlorine in water is 013 matm what is the concentration of chloride
an electron of mass 911x10-31 kg has an initial speed of 300x105 ms it travels in a straight line and its speed
the secondary voltage of an ignition transformer in a furnace is 145 kv when the primary operates at an rms voltage of
a car travels at 510 miles per hour and gets 120 kilometers per liter of gasoline how many gallons of gasoline are
a 685 kg astronaut is doing a repair on the space station she throws a 225 kg tool away from her at 320 ms with what
our procedure for a catalytic hydrogenation of 4-cyclohexene-cis-12-dicarboxylic acid molwt17016gmol says to scale up
an alternating source drives a series rlc circuit with an emf amplitude of 607 v at a phase angle of 333deg when the
a resistor is made out of a long wire having a length each end of the wire is attached to a terminal of a battery
1 how do you do a problem like thiscalculate the catechol substrate concentration of a solution prepared by mixing 18
the vapor pressure of ccl3f at 300 k is 856 torr if 120g of ccl3f is enclosed in a 10 l container what mass of liquid
suppose a 500 l sample of oxygen at a given temperature and pressure contains 108 1023 molecules how many molecules
two identical boxcars m 15730 kg are traveling along the same track but in opposite directions both boxcars have a
the light shining on a diffraction grating has a wavelength of 490 nm in vacuum the grating produces a second-order
three and only three bright fringes can be seen on either side of the central maximum when a grating is illuminated
three identical resistors with resistances of 60w are connected to a batter with an emf of 180v and zero internal
give the structure of the major and minor organic products formed when hbr reactw with e-44-dimethyl-2-pentene in the
a patient is undergoing open-heart surgery a sustained current as small as 25mua can be fatal assume that the heart has
the ionization constant of lactic acid ch3chohco2h is 136x10-4 if 200 g of lactic acid is used to make a solution with
the amount of charge that passes through the filament of a certain lightbulb in 200 s is 167ca find the current in the
a spaceship moving away from earth at 067 c fires a particle beam toward earth with speed 074 c relative to the ship at
the vapor pressure of water at 20 degrees celcius is 175 mmhg what is the vapor pressure of water over a solution
a piece of copper wire is formed into a single circular loop of radius 12 cm a magnetic field is oriented parallel to
suppose that 090g of water condenses on a 800g block of iron that is intitially at 24 degrees celsius if the heat