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svetoff [14.1K]
3 years ago
13

Does anyone know if these are correct? if not can anyone tell me what the answers are?

Chemistry
1 answer:
Stells [14]3 years ago
4 0

Answer:

16. correct

17. correct

18. correct

19. correct

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Which formula equation shows a reversible reaction? 2 upper N a plus upper F subscript 2 right arrow 2 upper N a upper F. Upper
Tamiku [17]

Upper N upper H subscript 4 upper C l (s) right and left arrows stacked above each other upper N upper H subscript 3 (g) plus upper H upper C l (g)

Explanation:

The given equation is;

  NH₄Cl    ⇄      NH₃   +    HCl

This equation is clearly different from the other ones.

  • In the reactant going forward, there is a right and left arrows stacked above each other.
  • The symbol is  ⇄  and it is used to show reversibility of chemical reactions.

learn more:

Chemical reactions brainly.com/question/3953793

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3 years ago
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What is 3O2 in science
andrew11 [14]

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Explanation:

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39. Period is the force of attraction between objects resulting in objects pulling towards each
storchak [24]

Answer:

True

Explanation:

if there was nothing to avoid of objects pulling towards one another many results may happen

8 0
3 years ago
Which of the following is the correct equation for the reaction below?
fenix001 [56]

Answer:

Option C.

2 Mg (s) + O₂(g) →  2MgO (s)

Explanation:

Two moles of magnesium solid react with one mol of oxygen gas to

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2 Mg (s) + O₂(g) →  2MgO (s)

That's the reaction for the magnessium oxide's formation.

Be careful cause we do not say molecules, they are moles.

The stoichiometry indicates the number of moles that react and the moles which are produced.

It is a redox reaction, because the magnessium is oxidized and the oxygen is reduced. Both elements, changed the oxidation states.

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, Hydrocarbons are compounds that contain(1) carbon, only(2) carbon and hydrogen, only(3) carbon, hydrogen, and oxygen, only(4)
Firdavs [7]
Hydrocarbons are compounds formed by only hydrogen atoms and carbon.

Answer (2)

hope this helps!
4 0
3 years ago
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