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a compound contains only c h n and o combustion of a 148g sample in excess oxygen yields 260g of co2 as well as 0799g
morphine is 7156 c 671 h 491 n and 1682 o as well as its molecular weight is 285 gmol explain what is its molecular
there is a movement a foot in the scientific community to change current stp conditions 1 atmospheric pressure and 273
a mixture of gases collected over water at 14 degrees celsius has a total pressure of 0981atm and occupies 55mla
a 377ml volume of an unknown gas is collected over water at19 degrees c and a total pressure of 770torr the mass of the
a 1443 g sample of caco3 mixture is treat with hydrochloric acid evolving co2 gas after the reaction the mixture has a
in few solid calcium carbonate samples calcium bicarbonate ahco32 is also present state a balanced equation for its
silver chloride frequently used in silver plating contains 7527 ag compute the mass of silver chloride required to
the atomic mass of element x is 3342 amu a 2780 g sample of x combines with 9010 g of another element y to form a
allicin is the compound responsible for the characteristic smell of garlic an analysis of the compound gives the
while conducting a simple experiment involving placing a small quantities of corn syrup in dialysis tubing as well as
when doing a calorimeter experiment my early temperature was21c while the mgo was added the first reading was 26c and
explain what percentage of hydrogen peroxide has been decomposed in mixture 1 when 200 ml of o2 gas has been evolved
explain as ionizing radiation explain what does ionizing radiation due and is all radiation
if the half life of uranium 235 is 704 x 108 years if 100pounds of this isotope is buried today when will 125 pounds be
1 explain why is it necessary to recrystallize your product how do you when to recrystallize a compound2 if your
a solution is prepared by dissolving 191 g ammonium sulfate in sufficient water to make1000 ml of stock solution a 1500
compare the heat produced by the complete combustion of 1 mole of methane ch4 with a mole of water gas 050 mole h2 and
a human body loses about 360kj of heat every hour presuming that an average human body is equivalent to about 60kg of
7 million gallons per day mgd of a conservative substance with concentration 135 mgl is released into a stream having
an aqueous antifreeze solution is 400ethylene glycole c2h6o2 by mass the density of the solution is105 gcm3 compute the
while doing sn2chemistry- synthesis of 1-bromobutane from butan-1-ol why would the crude product likely contain organic
while performing sn2 chemistry- synthesis of 1-bromobutane from butan-1-ol explain what would be the purpose of
while 500ml of a sodium nitrate solution containing 1704gl of sodium nitrate is added to 2500ml of sulfuric acid
the purity of a sample containing zinc as well as weighing 0198 g is determined by measuring the amount of hydrogen