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consider the equation aaq 2baq 3caq 2d aq in one experiment 450 ml of 0050 m a is mixed with 250ml of 0100 m b at
how would you distinguish experimentally between an amphourous a crystalline and a crosslinked
consider a solution formed by mixing 670 ml of 0100 m h2so4 320 ml of 0100 m hocl 250 ml of 0200 m naoh 250 ml of 0100
030 g of hydrogen chloride hcl is dissolved in water to make 45 l of solution what is the ph of the resulting
a trap door of length and width 155 m is held open at an angle of 650deg with respect to the floor a rope is attached
a solution contains 10 x 10-5 m na3po4 what is the minimum concentration of agno3 that would cause precipitation of
why is the c-c bond length in naphthalene c10h8 between the typical single c-c bond length and the typical cc double
in the structure of phenacetin is the nh group attached to the co and aromatic would the nh group be considered an
a stone used to grind wheat into flour is turned through 12 revolutions by a constant force of 217 n applied to the rim
a sphere of copper is subjected to 1469 mpa of pressure the copper has a bulk modulus of 130 gpaby what fraction does
140 ml of a 175 m aqueous solution of nh3 is titrated with a 106 m solution of hcl nh4 ka556x10-10what is the pha
a bowling ball made for a child has two thirds the radius of an adult bowling ball they are made of the same material
a solid sphere is released from rest and allowed to roll down a board that has one end resting on the floor and is
what volume in ml of 01085 m h2so4 would react exactly with 400 ml of a 0995 m solution of koh by the reaction h2so4 aq
a 40-year-old manager at a prominent legal firm in la experiences abdominal pain post lunch he goes to the restroom a
a weightlifter bench-presses a 1300 kg barbell from his chest to a height equal the length of his arms 0850 m how much
phosphate systems form essential buffers in organisms calculate the ph of a buffer made by dissolving 8 mol of naoh in
write a balanced equation for the following reaction nitric acid reacts with calcium hydroxide to produce water and
when is the standard enthalpy of a reaction for which the equilibrium constant is doubledwhen the temperature is
two laser beams fall on a screen and illuminate small circular areas what is the minimum distance between the centers
jordan is building a compound microscope using an eyepiece with a focal length of 750 cm and an objective with a focal
the distribution of na ions across a typical biological membrane is 10 mmol l-1 inside the cell and 140 mmol l-1
two identical 13-kg blocks are connected by a massless string over a frictionless pulley of radius r 15000 cm and
a transverse periodic wave is represented by the equation yx t 250 cm cos2500 rads t - 150 m-1 x what is the frequency
suggest a reason that tlc plates that are stored in a highly humid room result in different rf values than plates that