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a reaction has a standard free energy change of -1150 kjmol-1 calculate the equilibrium at 25 degrees
after the sun exhausts its nuclear fuel its ultimate fate may be to collapse to a white dwarf state in this state it
80 micrograms of lead were detected in 5 l of drinking water what is the concentration of lead in molarity
a 626-kg satellite is in a circular orbit about earth at a height above earth equal to earths mean radiusa find the
the diameters of the main rotor and tail rotor of a single-engine helicopter are 755 m and 104 m respectively the
identify the spectator ions that will form when aqueous solutions of sodium carbonate and silver nitrate are mixed
a uniform drawbridge must be held at a 37 angle above the horizontal to allow ships to pass underneath the drawbridge
a solid cube of iron density 787 gcm3 has a mass of 880 ga what is the resistance between opposite faces of the cube
consider the hypothetical reaction of a which could yield one or both of the two products b and c depending on reaction
a railroad car of mass252multiplied by104kg is moving with a speed of395ms it collides and couples with three other
draw the structure of an organic compound a that has the formula c7h12o and has peaks at 2950 cm-1 2750 cm-1 and 1745
in a certain series rlc circuit being driven at a frequency of 600 hz the maximum voltage across the inductor is 250
devise a chemical method for distinguishing between maleic and malonic acid i thought of bromination of maleic since it
electrons flow through a 22 mm diameter aluminum wire at 22 x 10-4 ms electron density of aluminum is 6 x 1028 m-3a how
a tennis player receives a shot with the ball 00600 kg traveling horizontally at600ms and returns the shot with the
which choice lists two health effects expected from the depletion of the ozone layer asthma lung cancer skin cancer
a ball of circumference 727 cm and mass 605 g is forced to the bottom of a swimming pool and then released after
how does one make 3-bromopropanol from propanol what are the reagents needed for this
a series rlc circuit is driven by an alternating source at a frequency of 410 hz and an emf amplitude of 900 v the
a 500-ml sample of a sulfuric acid solution of unknown concentration is titrated with a 01401 m sodium hydroxide
an airplane with a speed of 891 ms is climbing upward at an angle of 484 deg with respect to the horizontal when the
an experiment shows that a 153-ml gas sample has a mass of 0171 g at a pressure of 761 mm hg and a temperature of 32oc
the half-life of sn-110 is 4 hours if you had 40 grams of this nuclide how much would you have left 8 hours
a 200g 40cm diameter solid cylindrical turntable rotates on frictionless bearings at 60rpm a 20g block sits at the
the addition of one crystal of naclo3 to a solution of this salt causes more crystals to precipitate from solution if