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draw the major organic substitution products of the reaction indicate the stereochemistry at every stereocenter with a
a cannonball is shot from ground level with an initial horizontal velocity of 390 ms and an initial vertical velocity
when 2848 grams of sulfur is dissolved in 500 ml of cs2 density 1263 gml the solution boils at 4654 c what is the
the molar solubility of agbr in water is 731x10-7 mol dm-3 at 25c what is the standard potential of the cell
a 6 in diameter concrete test cylinder is subjected to a compressive load p 110 kips the cylinder fails along a plane
the permanganate ion is a common oxidizing agent what is the reduction potential at 25c of mno4- h mn2 couple at
while galileo did not invent the telescope he was the first known person to use it astronomically beginning around 1609
explain why copper metal does not dissolve in a typical strong acid such as hydrocholoric acid but will dissolve in 1m
we can model the eye as a sphere 250 in diameter with a thin lens in the front and the retina along the back surface a
suppose an old flashlight battery shows a voltage of 145 v when the probes of a voltmeter are placed across it however
calculate the observed rotation for a solution of a substance 20gml that is 80 optically pure a 2-dm cell is used the
a pyrex beaker that holds 250 ml of water at 20 degrees celcius is filled to the brim the system is heated to 40
calculate the ka of an unknown monoprotic acid when 15 ml of the acid was titrated with 28 ml of 015 m sodium hydroxide
propose a mechanism for the following reaction using arrows to show the flow of electrons be sure to show every
julie throws a ball to her friend sarah the ball leaves julies hand a distance 15 meters above the ground with an
john measured the thickness of a book using a measuring stick he obtained the following values in inches 238 236 258
consider a carnot cycle that operates between heat-reservoirs temperatures of 200 c and 50 c if 200 kj of heat is added
acetic acid has a pka of 474 a sodium acetate acetic acid buffer nach3co2ch3co2h with a ph of 474 can be made bya
a metal plate of area 015 meters squared is on top of a surface the plate and surface are separated by a 03 mm film of
consider a 619-n weight is being held by two cables the left hand cable has a tension of t2 and makes an angle of 2
calculate the change in ph when 5mmols of oh- are added to 100ml of a solution that is 01 m ch3cooh and 01 m
a 50 lbf object is dropped from a height of 53 ft neglecting air resistancea how long would it take for the object to
the density of muriatic acid is 1200 kg per cubic metera calculate its specific weight n kn per cubic meterb calculate
the particles in the nucleus of an atom are approximately 100times1015rm m apart while the electrons in an atom are