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a 250-ml sample of potassium chloride solution was found to have a mass of 25115g when the solution was heated to
two very small spheres are initially neutral and separated by a distance of 066 m suppose that 61 x 1013 electrons are
a hypothetical lake has a surface area of 23 acres and an avgage depth of 20 ft recently there was an accident where a
water is poured into a container that has a leak the mass m of the water is given as a function of time t by m 45t08 -
solid caf2 is shaken with a 0010m solution of naf what will be the concentration of ca2 ion in the resultant saturated
during heavy rain a section of a mountainside measuring 51 km horizontally 078 km up along the slope and 095 m deep
it is known that the peptide linkage in proteins and peptides is planar and restricted rotation about the
why is the normal boiling point of hydrogen fluoride is so much higher than that of hydrogen chloride the hydride of
a certain quantity of electricity is passed through a series of solutions containing agno3 crcl3 znso4 and cuso4a if
a proton orbits a long charged wire making 180 revolutions per second the radius of the orbit is 110 a what is the
for about 10 years after the french revolution the french government attempted to base measures of time on multiples of
a red blood cell with an inner concentration of 09 g nacl per 100 ml of solution is placed into a 20 g nacl per 100 ml
a sea lab 50 m high is to be designed to withstand submersion to 150 m measured from sea level to the top of the sea
if an aqueous solution containing pb2 ions is electrolyzed using a current of 0900 amps calculate the mass of pbs
in the electrolysis of kclaq how many liters of cl2g are formed measured at stp by a current of 100 amps for 15 hours
spacing in most book are generally done in units of points and picas 12 points 1 pica and 6 picas 1 inch if a figure
a horizontal beam of electrons initially moving at 42 107 ms is deflected vertically by the vertical electric field
sketch a cell which depicts the electrolysis of a 100 m aqueous solution of hcl assume both the electrodes are copper
a a sample of molten cdcl2 and a sample of aqueous cdcl2 are electrolyzed with inert electrodes determine the products
at an instant when a soccer ball is in contact with the foot of the player kicking it the horizontal or x component of
when a sample of molten mgcl2 and a sample of aqueous mgcl2 are electrolyzed with inert electrodes different products
a point charge of 61 microc is at the center of a cubical gaussian surface 60 cm on an edge what is the net electric
calculate the cr3 in equilibrium with croh4-aq when 0010 mol of crno33 is dissolved in a liter of solution buffered at
a physics instructor drives down to st louis to see his mom on the way there he travels the first half of the time at
a student is asked to prepare a 1 l buffer by adding 011 m sodium acetate to 009 m acetic acid solution what is the ph