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klio [65]
3 years ago
13

Help me pls . About how often does the Moon complete an orbit around Earth? ?

Chemistry
1 answer:
finlep [7]3 years ago
8 0

Answer:

approximately 27 days

Explanation:

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Are any of these equations redox reactions? if so what are their reducing and oxidizing agents?
MaRussiya [10]

Yes, Fe(s)+CuSO4→FeSO4(aq)+Cu(s) is a redox reaction. The reducing agent is Fe(s), while the oxidizing agent is CuSO4.

<h3>Oxidation-reduction reaction (redox)</h3>

Oxidation-reduction reaction is the type of reaction in which electrons are transferred from one element to another. A compound or an element either gains are looses an electron in redox reactions.

Fe(s)+CuSO4→FeSO4(aq)+Cu(s)

From the equation above, Fe(s) is the reducing agent because it gives away 2 electrons and undergoes oxidation reaction.

From the equation above, CuSO4 is an oxidizing agent because it gives oxygen to Fe(s) and undergoes a reduction reaction.

Therefore, the reducing agent is Fe(s), while the oxidizing agent is CuSO4.

Learn more about redox reactions here:

brainly.com/question/26263317

8 0
2 years ago
Period 6, group 12 (2B)
maksim [4K]

Answer:

mercury or Hg

Explanation:

i looked at the periodic table haha

hope this helps and is right <3

6 0
4 years ago
Energy can be created:<br> TRUE OR FALSE
snow_lady [41]

Answer:

True

Explanation:

6 0
3 years ago
Read 2 more answers
7. Calculate the amount of energy required heat 100.g to <br> H2O(s) changes to H2O(l) at 0°C
Brrunno [24]

Answer:

33300J

Explanation:

Given parameters:

Mass of ice  = 100g

Unknown:

Amount of energy = ?

Solution:

This is a phase change process from solid to liquid. In this case, the latent heat of melting of ice is 3.33 x 10⁵ J/kg.

 So;

            H  = mL

m is the mass

L is the latent heat of melting ice

  Now, insert the parameters and solve;

            H = mL

 mass from gram to kilogram;

            100g gives 0.1kg

  H = 0.1 x 3.33 x 10⁵ = 33300J

8 0
3 years ago
1. You have learned that alkyl iodides may be prepared by SN2 replacement of other leaving groups, or by treatment of alcohols o
Ainat [17]

Imidazole's cyclic structure is aromatic and the lone pair present at the N₁ atom available for donation. hence, according to question N₁ is the most basic atom in the structure.

<h3>What is resonating structure?</h3>
  • Two π bonds (between C₂-C₃ and N₁-C₅), as well as one lone pair on N₄, can interact with one another to generate a delocalized π system in the cyclic structure.
  • This delocalization is intriguing since it has the same number of delocalized electrons as benzene—six.
  • As a result, imidazole, like benzene, has a closed, delocalized ring with six π electrons. So, like benzene, it is regarded as an aromatic chemical with resonance stability.
  • N₄ is neutral since it cannot be donated because it needs to use its lone pair to be aromatic.
  • On the other hand, N₁ already forms a π connection, which helps the system become delocalized.
  • N₁ is sp² hybridized and has a trigonal planar basic form. Its lone pair cannot communicate with the delocalized π system since it is pointed away from the cyclic structure.

Know more about Resonating structure

brainly.com/question/8155254

#SPJ4

6 0
2 years ago
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