On a beautiful spring day, you tune out a classroom speech and listen to the birds sing.      In the speech communication process shown in the text, this is ______.

You’re giving your speech; you notice many audience members nodding their heads showing they understand the topic .  In the communication process model shown in the text, this is an example of ________.

What does usability of a technical document mean?

Where do professional letters state the date?

Why is considering the purpose of a technical document important? 

Where do professional letters state the writer’s contact details?

Technical documents use design to

Find the average value of the function f(x) on the interval if

Shown below is the structure of the amino acid, tyrosine. Part A) 5 points How many acid-base equilibria do I have to consider in tyrosine? Use the table below to find out. Part B) 25 points The pKa values of tyrosine are 2.2, 9.11 and 10.07. Indicate what equilibria these pKa represent. Indicate the correct overall charge of each species.   Part C) 10 points Indicate quantitatively which equilibria can be neglected in your calculation of contributions to total tyrosine concentration.   Part D) 20 points Calculate the equilibrium concentrations of all molecular species present in a tyrosine solution at pH 9.5 that you obtained by mixing NaOH and tyrosine to give a solution that is 0.1 M in total concentration of this amino acid, tyrosine.   Please do not fill in anything in the box provided below but instead upload your written answer as per instructions.

Consider the peptide below, it is made up of 9 amino acids. The second amino acid, phenylalanine, has no ionizable groups that can engage in protonation/deprotonation equilibria in the pH range 0-14.