Look at the periodic table. Find the element carbon. What is its symbol?

Chemistry

2 answers:

Sliva [168]3 years ago

6 0

A. ca is the answer because its short for carbon

VMariaS [17]3 years ago

6 0

THE ANSWER IS B. C
if you have a question like that just google it because the answer pops up really quick

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The pKa of the α‑carboxyl group of serine is 2.21 , and the pKa of its α‑amino group is 9.15 . Calculate the average net charge

sleet_krkn [62]

Answer:

Net charge in serine at pH equal to 8.30 is "0"

Explanation:

At pH > $pK_{a}$ , carboxyl group exists as $-CO_{2}^{-}$ (charged)

At pH < $pK_{a}$ , carboxyl group exists as -COOH (neutral)
At pH > $pK_{a}$ , amino group exists as $-NH_{2}$ (neutral)
At pH < $pK_{a}$ , amino group exists as $-NH_{3}^{+}$ (charged)
So, at pH = 8.30, both carboxyl and amino group exists in charged state.
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Structure of serine at pH equal to 8.30 has been shown below.

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