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Luba_88 [7]
3 years ago
15

Help me please!!!!!!

Chemistry
1 answer:
VashaNatasha [74]3 years ago
5 0

3 AgN03 + 1 Al ---> 3 Ag + 1 Al(NO3)3

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Draw the Lewis structure for sulfur tetrafluoride, SF4
Vlad [161]

Notes:-

  • S has Z=16

Electronic configuration

  • 1s²2s²2p⁶3s²3p⁴

So

  • Valency is 4 and 6

  • Three fluorine atoms take 3 electrons and one lone pair present over S
  • As one electron remains unshared so we use + sign .

6 0
2 years ago
How does most ocean water return to the ocean in the water cycle? Through precipitation over the ocean By flowing through rivers
andrey2020 [161]
Surface run off and when water infiltrates land it will start to make its way to a body of water.
7 0
2 years ago
Which element has 32 protons in its nucleus? phosphorus cobalt germanium sulfur
vovangra [49]

Answer:

Germanium.

Explanation:

In a neutral atom: the number of protons = the number of electrons.

Atomic number of a neutral atom = number of electrons = number of protons.

  • Phosphorous is an element with atomic number 15 and thus contains 15 electrons and 15 protons.

  • Cobalt is an element with atomic number 27 and thus contains 27 electrons and 27 protons.

  • <em>Germanium is an element with atomic number 32 and thus contains 32 electrons and 32 protons.</em>

<em></em>

  • Sulfur is an element with atomic number 16 and thus contains 16 electrons and 16 protons.
7 0
3 years ago
Read 2 more answers
The reaction below can be catalyzed by manganese dioxide (MnO2). If you carried out such a reaction, which compound would you ex
coldgirl [10]

Answer:

\boxed{\text{C. MnO$_{2}$}}

Explanation:

2H₂O₂ ⟶ 2H₂O + O₂

A catalyst is a substance that speeds up a reaction but can be recovered unchanged at the end.

Thus, at the end of the reaction I would expect to find H₂O and MnO₂ in the container.

Water is not listed in any of the options, so I will have to choose \boxed{\text{C. MnO$_{2}$}}.

A, B, and D are wrong. They are not reactants, products, or catalysts.

8 0
3 years ago
The steady state vital to life is possible because:________
Marianna [84]

Answer: The correct answer is e) all reactions are at equilibrium.

Explanation: In order for cellular vitality to develop, it is necessary for it to be in energetic balance with the environment, that is, to give and receive energy with the environment that surrounds it through endothermic or exothermic reactions. That is why the development of life is considered a system that constantly exchanges with the environment. In turn, that the cell unit maintains a balance with the environment causes homeostasis to occur among the whole organism.

5 0
3 years ago
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