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how many pi bonds and sigma bonds does the chemical compound caffeine has and where can one get some information on
in a lab experiment you are asked to determine the molar concentration of a solution of an unknown compound x the
you need to prepare a buffer for biochemistry lab the required solution s 05 m sodium phosphate ph 70 use the hederson
you have just prepared a solution by weighing 20 g of sucrose transferring it to a 1-liter volumetric flak and adding
calculate the molar concentration of a solution if the absorbance a is 0355 the molar absortivity a is 429 x10 to the
one series of lines called the pfund series occurs in the infrared region and results when an electron relaxes from
1 - a calorimeter has a heat capacity of 335jc calculate the quantity of heat required to raise the temperature of this
if 819g kio3 is dissolved in enough water to make 5000ml of solution what is the molarity of the potassium iodate
proteins can also be separated from each other or from small molecules by size exclusion chromatography also known as
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an aliphatic amino acid is to be used as a buffer the concentration of the diprotic form is 15mm and the concentration
we did an experiment to isolate acetylsalicyclic acid from aspirin using methanol we crushed the aspirin tablet before
we did an experiment to isolate acetysalicylic acid from aspirin using methanol our percent recovery was 17 what would
the density of acetonitrile ch3cn is 0786gml and the density of methanol ch3oh is 0791gml a solution is made by
derive the algebraic expression for the most probable speed the speed at the peak of the maxwell distribution function
a a sprinter set a high school record in track and field running 2000 in 212 what is the average speed of the sprinter
if the body fat has density of 094 gml and 3 quarts of fat are removed how many pounds of the fat were removed from the
what chemical reaction formula is involved in the thermal decomposition of ammonium persulfate
an infant acetaminophen suspension contains 80 080 suspension the recommended dose is 15 body weight how many of this
the volume of a substance increases with increasing temperature and decreases with increasing pressure these properties
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during the fermentation of wine a buffer system consisting of tartaric acid and potassium tartrate is formed by a