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benzene is a organic solvent with the formula c6h6 it boils at 801c and melts at 55 c benzenes density is 088gmml its
a curious student who enjoys bl ab chemistry puts on safety glasses obtains a beaker containing deionized water and
draw the conformations of 22-dimethylbutane looking down the c2-c3 bond clearly labeling the dihedral angle for each
three common hydrocarbons that contain four carbons are listed here along with their standard enthalpies of
a rock contains 0688 mg of 206pb for every 1000mg of 238u present assuming that no lead was originally present that all
propose a synthesis for 25-dimethyl-hexan-3-one using 2-methyl-1-propanol as your only carbon source this means that
water is a polar solvent and hexane c6h14 is a nonpolar solvent which of the following correctly describes the
a a red laser pointer emits light with a wavelength of 670 nm what is the frequency of this lightb what is the energy
if human height were quantized in one-foot increments what would happen to the height of a child as she grows
what is the maximum number of cs ions that can be produced per joule of energy absorbed by a sample of gaseous cs
suppose that95g of water condenses on a 750g block of iron that is initially at 22 degrees celcius if heat released
a what is the molarity of a solution that contains 1693 g of sodium chloride dissolved in 597 ml of solutionb a 105 ml
a mass of 137 g of manganese dibromide is dissolved in 330 g of water what is the molality of the
how many grams of ethylene glycol c2h4oh2 must be added to 800 g of water to yield a solution that will freeze at -84
the boiling point of carbon tetrachloride is 768 oc a given solution contains 769 g of a nonvolatile nonelectrolyte in
a fossil was analyzed and determined to have a carbon-14 level that is 220 that of living organisms how old is the
symthesis of methyl salicylate from salicylic acid methanol and h2so4 as a catalyst methanol is already in excess i
what is the final temperature in oc after a 135 gram piece of ice at 0oc is placed into a styrofoam cup with 1240 grams
the specific heat of calcium metal is 0653jgk how much heat in joules is required to heat a 585 gram sample of calcium
a 65 gram block of an unknown metal at 1000oc was dropped into an insulated flask containing approximately 300 grams of
in an experiment 2830 g of magnesium is reacted with 2776 g of oxygen gas according to the equation mg o2 gt mgoa what
the ph of 01 m mcl m iis unknown cation was found to be 47 write an net ionic equation for the hydrolysis of m and
the ph of a solution of a solution is 8 what are the hydrogen - and hydroxide ion
a weather balloon is filled with 50 liters of helium at 27c and 10 atm what volume does the balloon have when it has
the compounds br2 and icl have the same number of electrons yet br2 melts at -72degc and icl melts at 272degc