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Elodia [21]
3 years ago
7

Which of the following set ups which converts centimeters to fit

Chemistry
1 answer:
Eva8 [605]3 years ago
5 0

Answer:

The fourth one down

Explanation:

It is the only setup in which the units of "cm" and "in" cancel correctly and give the desired units of "ft."

The second one down has the correct units but the wrong conversion factor for converting centimetres to inches.

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Atoms try to have the same number of protrons and electrons. True or false
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False

Explanation:

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Explaian why pressure decreases but temperature varies as altitude increases
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Chlorofluorocarbons photodissociate to produce chlorine atoms, cl•, which have been implicated in decreasing the concentration o
GrogVix [38]

Answer:

The role that chlorine atoms have in increasing the depeltion rate ozone is that Cl acts as a catalyst.

Explanation:

  • From the two steps of the reaction:
  1. O₃ + Cl· → ClO· + O₂
  2. ClO· + O → Cl· + O₂
  • The overall reaction is: O₃ + O → 2O₂
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  • Also, Cl· is considered as a catalyst in this reaction that it has been consumed in the first step and has been produced in the second step, which means that it does not get up in the reaction, that is the main characteristic of the catalyst.
  • The catalyst usually increases the rate of the reaction by lowering its energy of activation (The minimum energy that is required to initiate the reaction) by proceeding the reaction in an alternative pathway <em>(changing the reaction mechanism)</em>.
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8 0
3 years ago
Carbon-14 is best used to find the age of:
Svetradugi [14.3K]

Answer:

anciet fossils

Explanation:

Radiocarbon dating involves determining the age of an ancient fossil or specimen by measuring its carbon-14 content. Carbon-14, or radiocarbon, is a naturally occurring radioactive isotope that forms when cosmic rays in the upper atmosphere strike nitrogen molecules, which then oxidize to become carbon dioxide.

5 0
3 years ago
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