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ad-work [718]
3 years ago
15

The mass of an atom comes from _____. A. the nucleus B. the neutrons C. the electro​​​​ns D. the protons

Chemistry
1 answer:
kramer3 years ago
4 0

Answer:

The answer is C

Explanation:

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PLEASE HELP The arrows in the chart below represent phase transitions.
Alona [7]

1, 2, and 3

hope it helps next time upload with picture

5 0
3 years ago
An oxide of nitrogen contain its own volume of nitrogen
kirill115 [55]

Answer:

NO2 is the molecular formula  of nitrogen Oxide​

Explanation:

Correct question

An oxide of nitrogen contain its own volume of nitrogen

its vapour dentity is 23. Find the molecular formula

Of nitrogen Oxide

Solution

As we know

Molecular Weight  is equal to two times the  vapour density

Hence, the molecular weight of Oxide of nitrogen is 2 * 22 = 44

Molecular weight of Oxide of nitrogen  is the sum of atomic weight of nitrogen and oxygen

Molecular weight of Oxide of nitrogen = 14 + 16 *Y

14 + 16 *Y  = 46

Y = 2

Hence, the formula is NO2

4 0
3 years ago
I need help with this question
scoray [572]
It’s C I think Idrk
3 0
3 years ago
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Which is a characteristic of a Lewis base? it behaves as the electron donor. It behaves as the electron acceptor. It donates a h
Dmitry [639]

<em>Answer:</em>

  • It behaves as the electron donar. Its is correct one

<em>Definition of lewis base:</em>

  • Lewis base is a such a substance which donate pair of electron to Lewis acid.

<em>Example:</em>

                                       H3N +  BF3  ⇒   H3N---≥BF3

  • Ammonia is a lewis base while boron trifluride is lewis acid.

<em>Condition</em>

  • There should be lone pair of electron
  • Negative charged substances or anions
4 0
3 years ago
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Which one of the following forces is a contact force force of gravity or force of friction​
murzikaleks [220]

Answer:

a force of friction would be like something moving that suddenly stops because of the texture of another object while a force of gravity would be something falling and gravity pulling it down :) hope this helps

Explanation:

3 0
2 years ago
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