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the heat required to raise the temperature of a large cup of water for coffee from room temperature to boiling is
oxalic acid is an organic acid with the formula h2c2o4 therefore the polyatomic anion derived from this acid will have
a biochemist is thrilled with her discovery of a new enzyme in order to characterize this new enzyme she uses osmotic
a concentrated nitric acid solution has a density of 113 gml and is 495 m calculate the hno3 by mass in the
calculate the weight percent of ascorbic acid in a tablet of vitamin c from the following dataa 1366 mg sample of a
calculate the molar concentration of a thiosulfate solution from the following informationa 3000-ml aliquot of a 00254
what volume of gas would you expect to generate from 1 gram of potassium chlorate at 250f r 082 l atmmole
the weak acid hypochlorous acid hclo has a ka 30x10-5a buffer is prepared by dissolving 100 g of naclo and 100 g of
carbon-hydrogen compound is burned in an excess of oxygen to give 176g of co2 and 9g of h20 as the products of
according to xrf my sample has 41 wt- of sio2 and 59 wt- of fe2o3 how do i convert the oxide wt- to element mol- to
in the explosion of a hydrogen-filled balloon 5 grams of hydrogen reacted with 40 grams of oxygen to form how many
you have a 1040-g mixture of table sugar c 12 h 22 o 11 and table salt nacl when this mixture is dissolved in 150 g of
the heat of combustion of ch4 is 8904 kjmol and the heat capacity of h2o is 752 jmoltimesk find the volume of methane
the energy difference of 38 kjmol between gauche and anti butane corresponds to an equilibrium constant k of
a sealed flask contains 045g of water at 28 c the vapor pressure of water at this temperature is 2836 mmhg what is
if the wavelength of a light wave is 50 x 10-6 meter calculate its frequency v use c v width c 30 x 108 msec what
menthol is a crystalline substance with a peppermint taste and odor when 165 g of menthol is dissolved in 250 g of
a 1500 g sample of a compound containing only c h and o was burned completely the only combustion products were 1738
a patient is given 0050 mg of technetium-99m where m means metastable- an unstable but long lived state a radioactive
in trans-12-dibenzoylethylene even though the conjugated co group frequency coincides directly with the expected cc
an aspirin tablet has a mass of about 325 mg 5 grains calculate the total mass of aspirin tablets in a 250- tablet
the standard width between rails on north american and most european railroads is 4 ft 8 in calculate this distance in
determine the volume in ml of 10 teaspoon 1 tablespoon 3 teaspoons 1 tablespoon 12 fluid
in the experiment 300 g of metal was heated to 980 degrees celsius and then quickly transferred to 500 g 0f water in a