3 years ago

Round to 4 significant figures 4,567,986

Chemistry

2 answers:

kipiarov [429]3 years ago

7 0

4,568,000
there is the rounded of 4 figures

abruzzese [7]3 years ago

4 0

4568000 ( horizontal line over 8 )

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in the future, clean energy sources, such as solar power, may be used to create hydrogen fuel true false

borishaifa [10]

False, b/c you can't turn electricity into a fuel

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3 years ago

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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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3 years ago

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NNADVOKAT [17]

Answer:

Explanation:

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3 years ago

Explain how you find the instantaneous speed or velocity of an object

puteri [66]

Answer:

divide the distance by the average

Explanation:

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3 years ago

You have been asked to prove that the Oil Spill Eater speeds up the reaction as you found above. Describe the basic set up of a

andriy [413]

Answer:

The correct answer is option 3. Run a test reaction of crude oil with ocean water over time with Oil Spill Eater present

Explanation:

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