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given 20g of each of the gases co2 h2 and ne in a flask with a totally pressure of 250 atmm what is the partial
the water at the gas-collecting port is assumed to be 25 degrees c but it is actually 15 degrees c how will this error
find the concentrations of the ions and of acetic acid in a 01 m solution of acetic acid at the body ph of 74h3o
the solvay process for the manufacture of sodium carbonate begins by passing ammonia and carbon dioxide through a
an aqueous solution of a compound with a very high molar mass was prepared in a concentration of 297 gmiddotl-1 at 25
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draw the major organic substitution products of the reaction indicate the stereochemistry at every stereocenter with a
when 2848 grams of sulfur is dissolved in 500 ml of cs2 density 1263 gml the solution boils at 4654 c what is the
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the permanganate ion is a common oxidizing agent what is the reduction potential at 25c of mno4- h mn2 couple at
explain why copper metal does not dissolve in a typical strong acid such as hydrocholoric acid but will dissolve in 1m
calculate the observed rotation for a solution of a substance 20gml that is 80 optically pure a 2-dm cell is used the
calculate the ka of an unknown monoprotic acid when 15 ml of the acid was titrated with 28 ml of 015 m sodium hydroxide
propose a mechanism for the following reaction using arrows to show the flow of electrons be sure to show every
consider a carnot cycle that operates between heat-reservoirs temperatures of 200 c and 50 c if 200 kj of heat is added
acetic acid has a pka of 474 a sodium acetate acetic acid buffer nach3co2ch3co2h with a ph of 474 can be made bya
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you used 32 grams of lime away solution in a titration the titration required 1806 ml of a koh solution which had a
1 calculate the freezing point of a solution containing 0600kg of chcl3 and 420g of eucalyptol c10h18o2 what would be
what is the ph of the final solution when 25 ml of 0022 m hcl has been added to 35 ml of 040 m hcl at 25 deg
write balanced chemical equations for all reactions in the sequence water and no2 g are produced in the first step1 cus
calculate the ph of 0515 l of a 0210 m nh4cl and 0210 m nh3 buffer before and after the addition of the following
firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens because this light generation is an
2k cl2 2kclhow many grams of kcl are produced from 250 g of k and excess cl2how do i begin to write this