why does lxw=a work
a group of 100 students took a quiz. Their average score was 76 points. If the average score for boys was 80 points and the average score for girls was 70 points, how many girls participated in the quiz
Show the predominant form of the amino acid tyrosine at pH=13.9 and ph=7.8. Be sure to include the proper number of hydrogens on heteroatoms and the correct formal charges on atoms. I calculated the pka values for COOH (pka=2.41) NH3 (pka=8.67), and OH (pka=11.01) but i'm...
You prepare a solution from 10.0 mL of 0.100 M MOPS buffer (3-morpholinopropane-1-sulfonic acid) and 10.0 mL of 0.086 M NaOH. Next, you add 1.00 mL of 8.87 × 10-4 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine present in the form...
I got the answer, thanks!
What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA, A2) at pH 7.05? Not sure how to find k1 and k2 needed for the fraction formulas...please help :(
Repeated words, papragrapgh transition, conjunction sentences etc. Just want to make sure on my writing. I am in seventh grade. I don't want to copy and paste it on here in case other kids might use my writing. Other wise I would ask you to look at it. I wish.
Hi where can I find a free on line thing to check my writing ?
Two spherical shells have a common center. A -2.00 × 10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +5.50 × 10-6 C charge is spread uniformly over the outer shell, which has a radius of 0.15 m.
Find the equation of the secant line to the graph of y= 2x^3-3x^2+4x-1 from x=1 to x=3. Give your answer in slope-intercept form.
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