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calculate the ph of a solution prepared by mixing 250 ml of 010 m hcl and 250 ml of 025 m
a plastic rod is rubbed against a wool shirt thereby acquiring a charge of 49 c how many electrons are transferred from
if the ka for the acid phenol call it hp is 13 x 10-10 what is the pka of the phenolate ion
a solution of nh4cl is prepared and its molarity is 100 x 10-3 what is the ph of this solution show all
calculate the change in ph to 001 ph units caused by adding 10 ml of 217-m naoh is added to 470 ml of each of the
an electron has an initial vertical velocity v0 y0001 c when it enters a uniform horizontal electric field e05 x x hat
you have a solid conducting sphere radius a net charge -2q surrounded by a conducting spherical shell inner radius b
0035 moles of so2 0500 moles of so2cl2 and 0080 moles of cl2 are combined in an evacuated 500 l flask and heated to 100
consider the reactioncsco2g2cog hdeg1198kjnow after each change below write an r if you believe the reaction will go to
sodium ions na move at 0844 ms through a bloodstream in the arm of a person standing near a large magnet the magnetic
calculate the minimum concentration of cr3 that must be added to 0095 m naf in order to initiate a precipitate of
a commonly used method of fastening one part to another part is called shrink fitting a steel rod has a diameter of
a buffer solution is prepared by adding 15 g each of benzoic acid and sodium benzoate in 1500 ml of solutiona what is
you are blowing bubbles using a bubble wand that has a circular loop at one end with a radius of 140 cm you hold the
the ksp for gdoh3 is 18 x 10-23 what would be the ph of a solution that contains 001 m
the ksp of agi is 83 x 10-17 what is the molar solubility of agi in a 010 m agno3 solution what principle does this
a thermos contains 151 cm3 of coffee at 857 degc to cool the coffee you drop two 106-g ice cubes into the thermos the
when 3880 j of heat are added to a 0159-m-long silver bar its length increases by 431 x 10-3 m what is the mass of the
a 200 ml sample of 0200 m hbr solution is titrated with 02 m naoh calculate the ph of the solution after 199 ml of naoh
at a temperature of 166 degc the mass and volume of a fluid are 798 kg and 120 m3 the coefficient of volume expansion
a spring is hung from the ceiling a 045kg block is then attached to the free end of the spring when released from rest
a solution contains 20 x 10-4 m ag and 15 x 10-3 m pb2 if nai is added will agi ksp 83 x 10- 17 or pbi2 ksp 14 x 10-8
you are able to hold out your arm in an outstretched horizontal position because of the action of the deltoid muscle
the equilibrium constant for the haber process is kc 0105 a two liter flash is filled with 0500 moles of nh3 and
calculate the ph of the solution which results from adding 3854 ml of 01012 m koh to the cyanic acidcyanate buffer of