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Angelina_Jolie [31]
3 years ago
13

Please help me. no trolls, links, files or any of that sort.

Chemistry
2 answers:
Alona [7]3 years ago
6 0
The ozone layer is the answer to you question hope this helped
Tresset [83]3 years ago
4 0

Answer:

The ozone layer

Explanation:

It sort of acts like a defense from the harmful ones and only allows weaker and non threatening ones in the atmosphere. If global warming continues, the ozone layer will break and we will be exposed to them

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A mineral is made from what in the ground
IrinaK [193]
<span>Minerals are solid substances that occur naturally. They can be made from a single element (like gold or copper) or from a combination of elements.</span>
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3 years ago
To fine the number of neutrons in an atom, subtract its_____
storchak [24]

a is the answer hope this helps

3 0
4 years ago
How can you tell from a substance's formula if it is ionic or molecular?
frozen [14]
Once you identify the compound as Ionic<span>, </span>Molecular, or an Acid, follow the individual ... chemicalformulas<span>, write </span>whether<span> the compound is </span>ionic or molecular<span>, and ...</span>
3 0
3 years ago
What's the empirical and molecular weight of C14H22N4O8? What's the molecular formula of C14H22N4O8?
Inessa05 [86]

374u

187u

C₁₄H₂₂N₄O₈

Explanation:

To find the molecular weight of the compound C₁₄H₂₂N₄O₈ we simply sum that atomic masses of the given elements in the compound.

 The empirical weight is determined by using the simplest ratio of the elements involved in the compound;

Molecular weight of C₁₄H₂₂N₄O₈;

atomic mass of C = 12g/mol

                           H = 1g/mol

                            N = 14g/mol

                            O = 16g/mol

 Molecular weight = 14(12) + 22(1) + 4(14) + 8(16)

                                = 168 + 22 + 56 + 128

                                 = 374u

Empirical weight:

  Empirical formula:

                        C₁₄    H₂₂      N₄     O₈

                         14  :    22 :    4  :     8

   divide by 2:

                          7   :    11    :    2  :    4

     empirical formula  C₇H₁₁N₂O₄

     empirical weight = \frac{molecular weight}{2} = \frac{374}{2} = 187u

The molecular formula is the actual combination of atoms in a compound. so the molecular formula of the compound is C₁₄H₂₂N₄O₈

learn more:

Molecular mass brainly.com/question/5546238

#learnwithBrainly

8 0
3 years ago
N2 + 3H2 → 2NH3
lana66690 [7]

 The number of  moles  of H₂ that are needed  to react with 2.0  moles of N₂  is    6.0 moles


 <u><em>calculation</em></u>

N₂  +3H₂→   2NH₃

The moles of  H₂  is  calculated  using the mole ratio

That is from equation above  N₂:H₂  is 1 :3

therefore the moles of  H₂ = 2.0  moles  x (3/1) = 6.0 moles

4 0
4 years ago
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