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a 50 g piece of zinc is placed in a beaker of dilute hydrochloric acid compute the work done by the system as a result
a titration was performed on 10 ml of unknown weak acid naoh was titrated with it the naoh concentration was 009445 the
1 explain what is the minimum volume of boiling water needed to dissolve 2 g of sodium benzoate the solubility of
explain how much hcl must be added to a liter of buffer that is 13m in acetic acid and 80m in sodium acetate to result
explain what is the hydronium ion state the net ionic equation for the neutralization of an acid with a base using the
explain how many grams of sucrose must be added to 500g of water at 100c to change the vapor pressure to 752mm hgit
compute the ph at the equivalence point in the titration of 45ml of 0190 m methylamine with a 0305 m hcl
some methanol evaporated after the volume was measured however before the mass was determined would the experimental
a certain sample of coal contains 12 sulfur by mass while the coal is burned the sulfur is converted to sulfur dioxide
compute the volume in ml of a 0620 m koh solution that should be added to 5750 g of hepes mw238306 gmol pka 756 to
regard as two cells the first with al and ag electrodes and the second with zn and ni electrodes each in appropriate
graph the relative energy vs torsion angle around the indicated bond like we did for ethane and butane in class depict
from equation ekq1q2d as well as the ionic radii given in the figure compute the potential energy of the subsequent
the united states and canada 348 million people convert to nano moles then 683 billion to
glucose combines with o2 in the body to produce carbon dioxide and water state a balanced equation for this reaction
compute the molar concentration of hno3 fm 630 in a solution that has a precise gravity of 142 and is 685 hno3
a radioisotope of iodine 131i is utilized to study thyroid function a patient is given a sample that is 17 10-4 m 131i
a chemist computes the amount of chlorine gas produced during an experiment he determines that 553 g of chlorine gas is
initially 00259 m of so2 g and 00200 m of o2 g are prepared at 1273 c in a reaction vessel with no so3 g added
r-3-chloro-2-methylhexane may undergo a nucleophilic substitution reaction in the presence of sodium ethoxide and
sorbitol is a sweet substance founding fruits and berries as well as sometimes used as a sugar substitute if an
if you have a stable isotope oxygen with a mass of 18 and an atomic of 8 when you bombard it with beta particles the
dmitri mendeleev would have understood explain how halogens and alkali metals are extremely reactive whereas noble
regard as the case where potential energy is greater that total energy resolve the schrodinger equation for this case
if two different mixtures of gasahol are available the first containing 23 alcohol as well as the second 30 alcohol