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In reference to the tripeptide Gly-Ala-Val,what is the isoelectric point at a pH of 5 and in what direction would it move if placed in an electric field.
Enough of a monoprotic acid is dissolved in water to produce a 0.0155 M solution. The pH of the resulting solution is 2.43
Draw the major organic product(s) formed when hex-2-yne undergoes hydration in the presence of HgSO4 and H2SO4.
What volume of 0.300 M CaCl2 is needed to prepare 240. mL of a solution which is 0.100 M in chloride ion.
How much water must be added to 534. mL of 0.180 M HCl to produce a 0.135 M solution? (Assume that the volumes are additive.)
Calculate the standard enthalpy of the reaction, Delta(H) rxn}, for the thermite reaction: 2Al(s) + Fe2O3(s) ----> 2Fe(s) + Al2O3(s) Elements in their standard state have an enthalpy of formation value of zero
Consider the electron shell with principle quantum number n = 5. a.) How many subshells are there with n = 5?
What are the concentrations of HSO4-, SO42-, and H+ in a 0.255 M KHSO4 solution? (Hint: H2SO4 is a strong acid; Ka for HSO4- = 1.3 10-2.)
What is the percent by mass of oxygen in a gaseous mixture whose molar composition is 0.500% CO2 and 99.500% air? The composition of air is 21% mole O2
Draw the Lewis structure of the lowest energy imidazolium ion. This is the lowest energy product formed when imidazole is protonated.
how many grams of carbon are required to react with 1.5x10^25 atoms of hydrogen to form CH4
The activation energy of the orginal pathway is 106 KJ/mol. What is the activation energy of the new pathway, all other factors being equal?
According to the following reaction, how many grams of silver chloride will be formed upon the complete reaction of 28.4 grams of copper(II) chloride with excess silver nitrate
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