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about 6 x 109 g of gold is thought to be dissolved in the oceans of the world if the total volume of the oceans is 15 x
what is a balanced equation to represent the formation of the precipitate formed between lead ii and
what is a balanced equation to represent the formation of the precipitate formed between silver and
which of the following is the best choice below for preparation of a 10m buffer solution required to maintain a ph of 3
write the balanced formula unit equation for the reaction of the complete combustion of pentane c5h12 what is the sum
what are the kb and pkb of a 106 10-3 m solution of quinine a drug used in treating malaria having a ph of 975 i
if double the amount of koh was added to 100 g of water what would happen to the temperature
magnesium has an atomic number 12 the ground state electron configuration of the magnesium ion mg2 isa 1s2 2s2 2p6 3s2
a 110 g sample of ice at -127deg c is mixed with 1146g of water at 800deg c calculate the final temperature of the
a student takes 005 moles of hcl and reacts it with 005 moles of sodium hydroxide in 100 g of water solution in a
what is the relationship between the ionization energy of an anion with a 1- charge such as f- and the electron
a sample of alkaline earth metal carbonate mco3250g was added to 10ml hcl 4m carbon dioxide gas evolved out from the
what concentration of the lead ion pb2 must be exceeded to precipitate pbf2 from a solution that is 10010-2m in the
why does rapid addition of bromobenzene to magnesium favor the formation of the undesirable by-product biphenyl over
1 a saturated solution of leadii chloride was prepared by dissolving pbcl2 solid in water the concentration of pb2 ion
a student failed to carry out all of the procedural steps when doing this experiment would the following procedural
transesterification occurs when an alcohol in excess reacts with an ester draw the skeletal structure of the ester
what wavelength lambda should the astrophysicist look for to detect a transition of an electron from the n 7 to the n3
a reaction of importance in the formation of smog is that between ozone and nitrogen monoxide is described as o3g nog
using equation e-21810-181n2 calculate the energy of an electron in the hydrogen atom when
the energy of activation for a certain reaction is measured to be 900kjmol the rate comstant of this reaction is 3026
two seperate solutions are made containing 100ml 026m hcl and 50ml 052m naoh at 200 c the solutions are mixed at
treatment with 3-hexene-2-ol with concentrated hcl gives a mixture of two prodcuts2-chloro-3-hexene and
what is the mole percent of ethanol c2h5oh which consists of 710g of ethanol for every 183grams of water
what can you conclude when no precipitate forms when hcl is added to an unknown