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you work for a local chemical company in your capacity as a chemist at this company you developed a novel catalyst for
a 1000 ml sample of 0300 m naoh is mixed with a 1000 ml sample of 0300 m hno3 in a coffee cup calorimeter both
a student observed the melting point of 4-methoxychalcone to be 63-70oc which of the following is are plausible
which of the following peptides has a pi close to 55 assume that the pka value of the alpha-amino group is 96 and the
what is the pka for the pyridium cation pyridine h2o lt----gt pyridium cation oh- kb 171 10-9 a pka for the pyridium
a student performs a series of calorimetry experiments she determines the calorimeter constant ccal for her coffee cup
at what ph is the weak base pyridine dissociated by 5 pyridine h2o lt---gt pyridium cation oh- kb 17110 -9 a ph 55
show the bond angles which are at least slightly different that are shown by the h2ccbr2
what was the purpose of using aq naoh in aldol condensation lab a it acts as an electrophile on which an enolate ion
which of the following correctly shows intrachain hydrogen bonding in an alpha-helix a -nh hn- b -co hc- c -co hn- d
when 0941 mol of gaseous hi is sealed in a 100-l flask at 225degc it decomposes until the equilibrium amount of i2
you have discovered a new mammal and have studied the hemoglobin isolated from the blood of this uncharacterized animal
when a solution containing equal moles of hemoglobin and myoglobin is bubbled with a small amount of o2 a hemoglobin
calculate the ph of an hcl solution if 165 ml of this hcl solution is titrated with a 0454 m naoh and it took 565 ml of
draw the major organic product for 2r3s-2-bromo-3-methylpentane reacting with the given nucleophile indicate
which of the following best describes a competitive inhibitor i a as i increases there is a decrease in vmax and an
for serine pkalpha-cooh 221 and for leucine pkalpha-cooh 236 if a mixture of 10 millimoles each of serine and leucine
one enzyme under study in a is peptidylglycine alpha-amidating monooxygenase pam the molecular weight of monomeric pam
the first step in industrial nitric acid production is the catalyzed oxidation of ammonia without a catalyst a
when an enzyme is purified from a complex mixture of proteins what usually happens to the total amount of protein and
the activity of an enzyme is close to zero at ph 10 and above and high at ph 6 and below the activity of this protein
1determine melting point--why would you do a mixture melting point 2determine melting point-what signifies the
predict what you would expect to observe when each of the following substances is mixed with naiacetone would you
the standard molar entropy for br2g is 24546 jmolk at 25c given that s 10458 jk for the dissociation of one mole of
a calculate go and kp for the following equibibrium reaction at 25c the gf o values are 0 for cl2g -286 kjmol for pcl3g