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a 310g sample of anyhydrous niso4 is exposed to moiost air for an extended period of time at the end of this period its
carbon-12 contains 6 protons and 6 neutrons the radius of the nucleus is approximately 27 femtometers and the radius of
lead metal can be extracted from a mineral called galena which contains 866 lead by mass a particular ore contains 685
acetaminophen was reacted with k2co3 and iodoethane to yield phenacetin would a similar reaction take place if
why are the steps of scientific methods are not always used in the same order in every
determine the empirical formula of a compound with the following composition by mass 48 carbon 4 hydrogen 48
what are the concentrations of all the solute species in a 10 m solution of hydrogen peroxide h2o2 for h2o2 ka 18 x
a 460 g chunk of iron is removed from an oven and plunged into 370 g water in an insulated container the temperature of
in the following amino acid sequences what amino acids will interact if the peptide forms an alpha-helix do you expect
another method to gain insight into the primary amino acid sequence is analyzing c-terminus amino acids in the
why do flares contain magnesium powder rather than a solid piece of magnesium-smaller particles have a lower energy of
consult the spectrochemical series to determine which of the following species would absorb light of the shortest
why is methyl -m- nitrobenzoate formed in the reaction instead of the ortho or para isomers in the methyl benzoate and
when 80 g of magnesium was reacted with excess dilute sulphuric acid 20 g of magnesium sulphate was obtained what is
a doctor has ordered that a patient be giving 25 grams of glucose which available in a concentration of 5500 grams
when 2-methylpropene was treated with aqueous sulfuric acid tert-butyl alcohol was obtained draw a step-by-step
in order to live we must have a constant supply of oxygen to our cells we get this oxygen by breathing in air the
at 250degc a sample of xe gas occupies 508 ml in a piston-cylider apparatus when the external pressure is 809 torr at
the mass of a 0106 mol of a compound is 6366 g what is the molar mass of this compound to three significant
what volume of 0955 m hcl in milliliters is required to titrate 2152 g of na2co3 to the equivalent pointna2co3aq 2
a table wine has a ph of 340 what is the hydronium ion concentration of the wine is it acidic or
some potassium dichromate k2cr2o7 2335 g is dissolved in enough water to make exactly 500 ml of solution what is the
penicillin is an important antibiotic isolated from a type of mold if you have 00588 g penicillin c14h20n2so4mw 31239
the reaction of methane and oxygen yields carbon dioxide gas and water the unbalanced reaction is as follows ch4g
styrenes empirical formula is chwhat mass of styrene contains 6481021 atoms of hydrogenthe molar mass of styrene is