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Problem- Draw the structure of the simple dipeptides gly-ala and ala-gly. Circle the peptide bond in each structure.
You must show your work in an efficient manner so I can understand it in clearly
Two components have boiling points of 130 C and 150 C. Estimate the number of theoretical plates needed to separate these substances in a fractional distillation.
Question- Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.100 M HClO(aq) with 0.100 M KOH(aq). The ionization constant for HClO is 4.0×10-8
It was found that 19.33 mL of an HI solution are needed to react completely with 320 mL of a LiOH solution that has a pH of 11.87. What is the molarity of the HI solution
A 0.481 gram sample of an unknown acid (HX) required 28.95 mL of 0.2013 M NaOH for neutralization to a phenolphthalein endpoint. What is the molar mass of the acid
The reaction of coal with water at high temperatures produces synthesis gas, which is a mixture of carbon monoxide and hydrogen. Use the bond energies in the table below to estimate the enthalpy of the reaction
Important information about Chair Conformation, Circle the least stable conformation as well.
a student carefully did a titration to determine the mass of acetic acid in the vinegar sample. after 50 ml of naoh was
a 17.5 g mass of ice at 273k is added to 125g of h2ol at 325k at constant pressure. is the final state of the system
Explain the pKa of acetic acid is 4.75. Suppose acetic acid is found in a solution with a pH of 4.75 which of the following. The acid exists predominately in the prorogated form.
Butane (C4H10) is burned to completion in air. How many moles of air are used for each mole of butane if 18% excess oxygen is used
Find delta heat formation of butane. C4H10 + 13/2 O2 ---> 4 CO2 + 5 H2O. Delta H comb= -2881.9 Delta Heat formation of CO2 = -393.5kJ/mol Delta Heat formation of H2O = -241.8kJ/mol What is the kJ
what is the percent yield of a reaction in which 228. g phosphorus trichloride reacts with excess water to form 118 g
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