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ipn [44]
3 years ago
15

I REALLY NEED YOUR HELPPPPPP!!!!!!!!!!!!!!!!!!!!when the boy was skating,kinetic energy was ______and thermal energy was _______

.
as the boy applied his brake pad,kinetic energy was ______and thermal energy was ______
when the boy stopped,kinetic energy was _______and thermal energy was _______.
at all times,total energy=_______+______energy.

Chemistry
1 answer:
77julia77 [94]3 years ago
4 0

Answer:high,low,decreasing,increasing,low,high,potential,kinetic

Explanation:

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3 0
3 years ago
Which of the following best describes how an ionic compound dissolves in water?
Nadusha1986 [10]

The statement that best describes how an ionic compound dissolves in water is as follows: it separates into individual molecules and is an electrolyte, which is option C.

<h3>What is an ionic compound?</h3>

Ionic compound is any compound is a chemical compound composed of ions (charged atoms) held together by electrostatic forces termed ionic bonding.

Ionic compounds are electrolytes i.e. a substance when, in solution or when molten, ionizes and conducts electricity.

For example; sodium chloride (NaCl) is an ionic compound breaks down into sodium ions (Na+) and chloride ion (Cl-).

Therefore, the statement that best describes how an ionic compound dissolves in water is as follows: it separates into individual molecules and is an electrolyte.

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4 0
2 years ago
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.
  • 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.

8 0
4 years ago
How can you explain what happened?
galina1969 [7]

Answer:

What do you mean what happened?

Explanation:

???

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3 years ago
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