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fredd [130]
3 years ago
8

What is the evidence for sea-floor spreading

Chemistry
1 answer:
zubka84 [21]3 years ago
4 0
There are certain points of the sea floor that contain young rocks, and as you go outward from there, they get older, indicating some sort of "birthplace". Also, the sea floor consists of alternating magnetic "strips," which can be accounted for by the gradual formation by the upwelling of lava.
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Rachel has a sample containing 2 moles of carbon. How many atoms of carbon are in this sample?
Bumek [7]

Answer is: c. 1.204 × 10²⁴ atoms of carbon.

n(C) = 2 mol; amount of substance of carbon.

Na = 6.02·10²³ 1/mol; Avogadro constant (the number of constituent particles, in this example atoms, that are contained in the amount of substance given by one mole).

N(C) = n(C) · Na.

N(C) = 2 mol · 6.02·10²³ 1/mol.

N(C) = 12.04·10²³ = 1.204·10²⁴; number of carbon atoms in a sample.


5 0
4 years ago
Read 2 more answers
According to the chemical formula shown below, all of the following elements are found in phosphoric acid EXCEPT
slava [35]
I think C but it could be B as well
4 0
3 years ago
Which two processes are destructive forces that occur during sedimentary rock formation?
viktelen [127]

Answer:

The ans is weathering and erosion

4 0
3 years ago
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The IUPAC name of(CH3)2CHCH2CH=CH2
jarptica [38.1K]

Answer:

4-Methyl-1-pentene

Explanation:

According to  the International Union of Pure and Applied Chemistry (IUPAC), IUPAC nomenclature of organic chemistry is defined as the system of naming organic chemical compounds.

There are certain rules for naming organic chemical compounds as per IUPAC. The name of given (CH3)2CHCH2CH=CH2 will be based on the same rules.

  • At first find out the longest continuous chain and number the chain consecutively (preference given to double and single bonds), so numbering will start from right to left. the given chemical is 5 Carbon chain long.
  • Then, identify the groups attached to this chain. Methyl is the only group attached to this chain at  4 Carbon.
  • Assemble the name in alphabetical order using the full name using correct prefix and suffix.  

4-Methyl-1-pentene is the name of this chemical, as methyl is in 4th carbon position, Pent for 5 carbon chain and -ene (suffix) for one double bond).

Hence, the correct answer is "4-Methyl-1-pentene".

6 0
3 years ago
Here is the overall reaction of a mercury oxide dry cell: Zn + HgO --> ZnO + Hg. In this reaction, which of the following get
Alona [7]
Zinc is oxidized because it starts as a metal with an oxidation state of zero and ends up as an atom bound to oxygen. Oxygen has two bonds, so the oxidation state of Zinc would be 2. The Mercury is therefore reduced because it undergoes the opposite process. This is a REDOX reaction, and the two half-reactions are: 

Zn -> Zn(+2) + 2e(-) 
Hg(+2) + 2e(-) -> Hg

The answer to your question is C. I hope that this is the answer that you were looking for and it has helped you.
3 0
3 years ago
Read 2 more answers
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