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Ksenya-84 [330]

2 years ago

9

Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at 656.28 nm is seen to be shift

ed to 656.08 nm. Is the star moving towards or away from us, or can we not tell?

1 answer:

snow_lady [41]2 years ago

4 0

Answer:

The Star is moving towards us

Explanation:

Since there is a reduction in shift from the hydrogen line.

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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]

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Structure of serine at pH equal to 8.30 has been shown below.

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