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the atomic radius of nickel is 124 pm and the average atomic mass of nickel is 586934 amu calculate the density of
a pure iron beam is surface hardened by exposure to a carbon source at 700 degrees celsius at this temperature iron is
given a buret filled with 013 m acetic acid and a second buret filled with 017 m sodium acetate how many milliliters of
consider the titration of 485 ml of 12 m naoh with 10 m hcl find the ph at the following pointsa at the start of the
titanium iv chloride ticl4 can be used to produce titania by the sol-gel method what mass of ceramic can theoretically
calculate the solubility of cux kspcu2x2-12710-36 in a solution that is 0170m in
consider the possible reaction when stoichiometric amounts of solutions of baoh2aq and al2so43aq are mixed the products
write a molecular equation for the precipitation reaction if any that occurs when the following solution are mixed how
a 1500 ml sample of hno3 nitric acid is titrated with a naoh sodium hydroxide solution the sodium hydroxide solution
a molecular compound contains 923 carbon and 77 hydrogen by weight if 0152 mol of the compound weighs 395 g what is its
calculate the minimum concentration of cr3 that must be added to 0095 m naf in order to initiate a precipitate of
initially a mixture contains 0629 mol each of n2 and o2 in an 664-l vessel find the composition of the mixture when
what mass of ammonium chloride should be added to 265 l of a 0165 m nh3 in order to obtain a buffer with a ph of
gaseous oxygen is held in two separate containers at identical temperature and pressure the volume of container a is
if 88 mg of iodine-123 is used in an experiment how many milligrams of iodine-123 should remain after 50 hours assume
using activities calculate the ph of a solution containing 0019 m naoh plus 00120 m
a 200 ml sample of hypobromous acid hbro was titrated with 0180 m koh to reach the equivalence point required 2775 ml
the ksp for aloh3 is 1910-33 what is the ph of a sauturated solution of aloh3 ignore any
the initial temperature of a 344 g sample of iron is 182 deg c if the sample absorbs 225 kjof energy as heat what is
a calculate the h3o of a solution that has an oh of 0000 0060m is the solution acidic basic or neutralb calculate the
a solution was prepared by dissolving 0450 g mgso4 fw120363gmol in 0500l of water a 500 ml aliquot of this solution
calculate the power required to compress 10kgs of air from 1atm and 57 degree c to 3atm and 707 degree ct310k h2904
after carrying out the reaction why does a precipitate solid form when you pour the reaction mixture on
if a solution has a ph 70 and cd2 is added to it the ksp of cdoh2 25 x 10-14 what molar concentration of cadmium ion
niacin is one of the b vitamins and it acts in solution as a weak acid call it hn if a 200 x 10-2 m of hn is prepared