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the subscripts in a chemical formula represent the relative mass of each atom in a chemical compound explain
a wastewater solution has a concentration of 452e-2 m ag ion if you have 950000 gallons of this waste solution how many
consider the titration reaction of sulfuric acid h2so4 and sodium hydroxide if 4 ml of a 10m solution of sodium
consider the titration reaction of hydrochloric acid and sodium hydroxide if 4 ml of a 10m solution of sodium hydroxide
concentrated sulfuric acid almost 100 h2so4 has a recognized density of 184 gramscm3 based on this calculate the
a compound containing 3 atms of carbon and 8 atoms of hydrogen in a reaction with oxygen molecules the 2 end poducts of
calculate the enthalpy change change of h for the process in which 371 g of water is converted from liquid at 44
if the vinegar were measured volumetrically eg a pipet what additional piece of data would be needed to complete the
give characteristic absorptions values in cm-1 for absorptions by each of the following functional groupsa alcoholsb
consider the reaction between mercury iodide hg2i2 and sulfur yielding mercury hgs sulfide and iodine divalent molecule
consider the reaction of phosphorus and nitric acid determine how the oxidation number of phosphorus changes during
a in this experiment it is important that the benzaldehyde used should be pure benzaldehyde is easily oxidized by air
a concentration cell consists of two h2h half cells half cell a has h2 at 087 atm bubbling into 020 m hcl half cell b
draw the condensation reaction that would form the dipeptide met-ile from the amino acids methionine and isoleucine
sorbose c6h12o6 is used in making vitamin c a sorbose sample containing 48 g of carbon atoms also contains g of
a 50 g sample of nacl is added to a styrofoam cup of water and the change in water temperature is 45 degrees c the heat
tungsten has a boy-centered cubic unit cell and an atomic radius of 141 pm what is the density of solid
what is the total amount of heat energy transfer required to change 086 mol of ice at -22 oc to steam at 100
the vapor pressure of ethanol at 50 oc is 233 mm hg and its normal boiling point at 1atm is 783 oc calculate hvap of
qualitative analysis revealed that an unknown contained the anions no3- cl- and clo3- a student weighed a sample into a
the first order rate constant for decomposition of an insecticide in the environment is 343x10-2 d-2 how long does it
phosgene cocl2 is formed from cl2 and co at high temperatures the mechanism is thought to becl2 lt---gt 2 cl fastcl co
the combustion of methane gas the principal constituent of natural gas is represented by the equationch4 2o2--gtco2h2o
an unknown metal reacts with oxygen to give the metal oxide mo2 identify the metal based on the following
157 atm of c2h2 and 273 atm of o2 are combined in an empty sealed 2500ml flask at 230 degrees celcius the flask is