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if i add amnonia to 1 ml of copper ii sulfate solution and i am observing the mixture turn a darker blue what type of
a thermometer can be made from a brass wire temperature coefficient of resistivity 000150degc1 at 200degc which has a
calculate the ph of a 060 m h2so3 solution that has the stepwise dissociation constants ka115x10-2 and ka2
the graphite in a pencil has a resistivity of 784times106 wm the graphites diameter is 0700 mm and its length is 400
12-gauge copper wire has a radius of 103times103 ma what is the resistance of 115 m of this wire at 20degcb how much
calculate the ph of a solution that is 0295 m in sodium formate nahco2 and 0205 m in formic acid hco2h the ka of formic
what volume of 500x10-3 m hno3 is needed to titrate 8000 ml of 500x10-3 caoh2 to the equivalence
a tall tree is growing across a river from you you would like to know the distance between yourself and the tree as
how many milliliters of 00850 m naoh are required to titrate 250 ml of 00720 m hbr to the equivalence
a solid uniform disk of radius 0250 m and mass 451 kg rolls down a ramp of length 520 m that makes an angle of 131deg
formic acid hco2h ka18x10-4 is the principal component in the venom of stinging ants what is the molarity of a formic
select the correct answer1 the 20 different amino acids are distinguished bya location of carboxyl groupsb location of
how many millliters of 0750 m h3po4 are required to react with 250 ml of 0150 m baoh2 if the products are barium
a 1840 w radiant heater is constructed to operate at 115 v what is the resistance in ohms of the heating
what ph is required to start precipitation of feoh3 from a 0110 m solution of fecl3 ksp of feoh3 40
a 240 kg ball is attached to an unknown spring and allowed to oscillate the figure shows a graph of the balls position
calculate the wavelength of an electron that has been accelerated through a potential difference of 110
a what mass of iron can be obtained from108g of iron iii oxideb how many grams of cl2o7 must be reacted with an excess
the star nearest the earth the sun radiates the most energy at a wavelength of 470 nm what is the temperatures of the
light of wavelength 650 nm is incident normally upon a glass plate the glass plate rests on top of a second plate so
a mixture is made by mixing 407 ml 0000200 m hcl with 383 ml of 0000180 m naoh based upon these values the mixtures ph
a cylindrical storage tank has a radius of 143 m when filled to a height of 360 m it holds 13500 kg of a liquid
a paperweight when weighed in air has a weight of w 114 n when completely immersed in water however it has a weight of
it was found that 1933 ml of an hi solution are needed to react completely with 320 ml of a lioh solution that has a ph
part aa a 1758ml sample of 0380m acetic acid ch3co2h was allowed to react with 1915l of gaseous ammonia at 25 degrees c