the new york stock exchange closed shortly after the planes struck the towers they did not reopen until ?

Chemistry

1 answer:

Leno4ka [110]3 years ago

8 0

not until 9/17. it was the longest shutdown since 1933

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How many chlorine atoms in 3ZnCl2

disa [49]

Answer:

6 Cl atoms

Explanation:

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Therefore, in 3 molecules of ZnCl2, we'll have 3(2) atoms of Cl = 6 atoms of Cl.

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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"

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

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Net charge in serine at pH equal to 8.30 is "0".
Structure of serine at pH equal to 8.30 has been shown below.

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