Why the correct number of significant figures is important should be discussed. And rules for deciding whether a figure is significant in a calculation, rules for rounding off numbers and rules for doing arithmetic with correct number of significant figures should be summarized. Concept Introduction: Any measurement involves estimation and thus is uncertain to some extent. The degree of certainty for a particular measurement is signified by the number of significant figures.

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Chapter 3, Problem 7CR

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Why the correct number of significant figures is important should be discussed. And rules for deciding whether a figure is significant in a calculation, rules for rounding off numbers and rules for doing arithmetic with correct number of significant figures should be summarized.

Concept Introduction:

Any measurement involves estimation and thus is uncertain to some extent. The degree of certainty for a particular measurement is signified by the number of significant figures.

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need help please and thanks dont understand a-b Learning Goal: As discussed during the lecture, the enzyme HIV-1 reverse transcriptae (HIV-RT) plays a significant role for the HIV virus and is an important drug target. Assume a concentration [E] of 2.00 µM (i.e. 2.00 x 10-6 mol/l) for HIV-RT. Two potential drug molecules, D1 and D2, were identified, which form stable complexes with the HIV-RT. The dissociation constant of the complex ED1 formed by HIV-RT and the drug D1 is 1.00 nM (i.e. 1.00 x 10-9). The dissociation constant of the complex ED2 formed by HIV-RT and the drug D2 is 100 nM (i.e. 1.00 x 10-7). Part A - Difference in binding free eenergies Compute the difference in binding free energy (at a physiological temperature T=310 K) for the complexes. Provide the difference as a positive numerical expression with three significant figures in kJ/mol. The margin of error is 2%. Part B - Compare difference in free energy to the thermal energy Divide the…