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you have two solutions of the same molar concentrations one contains lactic acid the other sodium lactate you want to
a material has an index of refraction of 1980 what is the critical angle for internal reflection inside a block of this
calculate the ppm salt nacl in a 5000 ml sample of an unknown brine titrated with 3764 ml of 01024 m silver nitrate
a light from a 556-nm monochromatic source is incident upon the surface of fused quartz n 156 at an angle of 51deg
the formula for rust can be represented by fe2o3 how many moles of fe are present in 100 g of the
motor oil with a viscosity of 0250 nsms is flowing through a tube that has a radius of 300 mm and is 100 m long the
how many moles of o are needed to combine with 0289 mole of c to form the following compounds co and
a cylinder semicircular in cross-section 100 m long and 500 m in radius is completely submerged in water what is the
calculate the initial concentration of iodide ion after the solutions in tubes a and b are mixed before the reaction
a u-tube is open to the atmosphere at both ends water is poured into the tube until the water rises part-way along the
a 1486-kg car is moving westward with a speed of 203 ms and a 2898-kg truck is traveling east with a speed of 178 ms
a mixture of methane and air has capability of being ignited if mole percent of methane is between 5 and 15 a mixture
a coiled wire forms a spiral with 243 turns a diameter of 23 cm and an unstretched length of 27 cm determine the
a 02m citrate buffer ph 50 was prepared using citric acid h3a and sodium citrate na3a what are the concentrations of
an insulated container of negligible mass holds 0200 kg of water and 005kg of ice in thermal equilibrium at atmospheric
some 2-methyl-2-butene may be produce in the reaction as a by-product give a mechanism for its
a mass of 500 g is resting on a vertical spring with a force constant of 55 nm a mass of 250 g is dropped from a height
a backpack full of books weighing 52n rests on a table in a physics classroom a spring with a force constant of 150nm
a long straight wire carries a current of 40 a in a region where a uniform external magnetic field has a 30-microt
the pressure of a helium gas cylinder is 297 atm after several balloons have been blown up the pressure is decreased
an electron initially at rest recoils after a head-on collision with a 594-kev photon determine the kinetic energy
a solid sphere of mass m and radius r spins about a horizontal axis with a period t it is hung by a thread attached to
the first bright fringe of a diffraction grating of 600 rulingmm is found at angle of 21 degreesfind the wavelength
in 1971 apollo 14 astronaut alan shepard hit two golf balls while on the moon the first one rolled 40 yards into a
when a concave mirror is placed facing the sun the suns rays converge to a point 10cm from the mirror now an erect