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a piece of wood found in an archaeological dig has carbon-14 activity of 5 counts per minute cpm new wood has a cpm of
the dosage of technetium-99m for myocardial imaging is 150 mucikg of body weight how many mci should be given to a
in the anaerobic fermentation of grain the yeast saccharomyces cerevisiae digests glucose from plants to form the
a hydrocarbon fuel is burnt with excess air the orsat analysis of the flue gas shows 102 co2 10 co 84 o2 and 804 n2
what hybridization is needed to describe the square planar molecular geometry of krf4 explain how the hybridization is
if you did not know that the first liquid tested was water would you have been able to identify it based on its melting
a pressure vessel contains co2 pco2 378 atm and o2 po2 6 atm gases at a total pressure of 978 atm what is the
aqueous hydrogen fluoride hydrofluoric acid is used to etch glass and to analyze minerals for their siliconnbspcontent
some commercial drain cleaners contain two components sodium hydroxide and aluminum powder when the mixture is poured
can someone explain how to solve1 determine the relative error for the following quantity 547plusmn005 047plusmn003 -
a student increases the temperature of a 556 cm cubed balloon from 278 k to 232 k assuming constant pressure what
what does the structural formaul for 2-octene which has a double bond between the number 2 and 3 carbons look
a student uses a calorimeter to determine the enthalpy of dissolving for ammonium nitratenbspthe student fills a
what type of hydrocarbon is 2-octene and what about the structure allows 2-octene to be classified as this type of
a gas at constant temperature occupies a volume of 240 l and exerts a pressure of 085 atm what volume will the gas
what volume of 008892m hno3 is required to react completely with 02352 g of potassium hydrogen phosphate2hno3aq
how are you able to determine which atom is more electronegative when looking at the periodic table of elements for
aqueous potassium iodate kio3 and potassium iodide ki react in the presence of dilute hydrochloric acid as shown
0600 l of ar at 108 atm and 2200 oc is mixed with 0200 l of o2 at 516 torr and 1160 oc in a 4000 ml flask calculate the
how do you get the specific heat capacity of an unknown metal this is the enthalpy and specific heat
a serving of chicken a la king has 235 kcal if the serving has 11 g of carbohydrates and 12 g of fat about how many
what is the heat of fusion of ethanol in calories per mole the heat of fusion for ethanol is 452 calg the molar mass of
what is the heat of fusion of ethanol in calories per molenbspthe heat of fusion for ethanol is 452 calgnbspthe molar
combustion is not always complete usually because of an insufficient supply of oxygen describe a hypothesis including a
1 what is the balanced chemical equation for the synthesis of n-acetyl-p-toluidine from p-toluidine2 what is the