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a 125 by mass solution of sodium chloride nacl in water has a density of 1115 gml at 20 degrees c what is the molarity
describe the preparation of 200 l of a 675 ppm no3 solution from the salt
calculate the free energy change for the interconversion of glyceraldehyde-3-phosphate g3p and dihydroxyacetone
a blight has wiped out the pineapple crop you are asked to synthesize the ester that is responsible for the scent of
the vapor pressure of water at 25deg c is 238 torr determine the mass of glucose molarmass180gmol needed to add 500g of
construct a born haber cycle for the formation of the hypothetical compound nacl2 where the sodium ion has a 2 charge a
consider the lewis structure for the polyatomic oxyanion shownbelow where x is an element from the 3rd period na- ar by
given a mixture containing 0480 mol heg 0300 mol neg and 0118 mol arg is confined in a 700-l vessel at 25c calculate
if you were cooking food in boiling water on the stove could you increase the speed of cooking by increasing the heat
you have 1000l of a 0350m kcl solution but you need a solution that is 0450m what volume of water in l would you
a plot of ln k vs 1t for the decomposition of dinitrogen pentoxide yielded a slope -785 x 105 and a y-intercept 352
at 40degc heptane has a vapor pressure of about 915 torr and octane has a vapor pressure of about 312 torr assuming
what is the major neutral organic product when the following goes under an sn1 reaction 2-bromo-1-methylpentane reacts
write the answer with the correct number of digits find the absolute and relative uncertainty associtated with each
a solution of ethanol d0795 gml and water is prepared by placing 300 ml of ethanol in a 2500 ml volumetric flask and
a solution contains 625g calcium nitrate cano322 in 4300g of water express the concentration of calcium nitrate as mole
what is the density in grams per liter of a gas mixture that contains 250 f2 and 750 he by volume at 768 mm hg and 250
a water solution of sodium hypochlorite naclo has a concentration of 061m express this concentration as a mole
the hydrogen ion concentration in a solution with ph 10 is then the hydronium ion concentration in a solution with ph
speculate on the structure of the compound formed when 4-dimethyl-aminobenzaldehyde is condensed with
for the above current at 545 v how much electrical energy in kw-hr is consumed in the production of 1 kg of aluminum a
using the enthalpy of reaction for the 2 reactions with ozone determine the enthalpy of reaction for the reaction of
how much water mass must be added to 45 moles of glucose to make a 15 by mass solutionthe molar mass of glucose is 180
100ml of 010m pbno32 is mixed with 100ml nacl after equilibrium is attained it is determined that the concentration of
one mole of any gas has a volume of 22414 l at stp what are the densities of the following gases in gl at