Which statement describes how polymerization relates to proteins and amino acids?

1 answer:

Studentka2010 [4]3 years ago

7 0

The statement “Many different amino acids join together to form a protein” best describes polymerization. Amino acids are the basic molecules in proteins. Polymerization is the bonding of two or more molecules in order to create a larger molecule, which in this case is protein. The bonding agent between the amino acids is called the peptide bond.

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Which nuclei are most useful for organic structure determination using nmr spectroscopy? (select all that apply.)?

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2 years ago

1 C8H10(l) +21/2O2(g) → 8CO2(g) + 5H2O(g), Hcomb= ? Hf for C8H10(l) = +49.0kJ/mol C8H10(l) Use the balanced combustion reaction

nikklg [1K]

Answer:

$H_{comb}=-4406kJ/mol$

Explanation:

Hello,

In this case, the enthalpy of combustion is understood as the energy released when one mole of fuel, in this case octene, is burned in the presence of oxygen and is computed with the enthalpies of formation of the fuel, carbon dioxide and water as shown below (oxygen is circumvented as it is a pure element):

$H_{comb}=8*\Delta _fH_{CO_2}+5\Delta _fH_{H_2O}-\Delta _fH_{C_8H_{10}}$

Thus, since we already know the enthalpy of combustion of the fuel, for carbon and water we have -393.5 and -241.8 kJ/mol respectively, thereby, the enthalpy of combustion turns out:

$H_{comb}=8*(-393.5kJ/mol)+5(-241.8kJ/mol)-49.0kJ/mol\\\\H_{comb}=-4406kJ/mol$