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Anna11 [10]
3 years ago
6

What is metal ? Where does it coke from ?

Chemistry
2 answers:
DerKrebs [107]3 years ago
8 0

a metal is an element that readily forms positive ions (cations) and has metallic bonds

coke is a strong stimulant made from coca leaves

aleksandrvk [35]3 years ago
5 0

Answer:

  • Most pure metals, like aluminium, silver and copper, come from the Earth's crust.
  • They are found in ores – solid materials called minerals, usually occurring in rock, from which the pure metal has to be extracted.
  • The properties of pure metals can be improved by mixing them with other metals to make alloys.

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What type of reaction is most likely to occur when barium reacts with fluorine? combustion synthesis decomposition single replac
Lana71 [14]
Answer is: synthesis. 
Chemical reaction: Ba + F₂ → BaF₂.
Synthesis is type of reaction where two or more compounds (in this reaction barium and fluorine) react to form one product (in this reaction BaF₂).
BaF₂ - barium fluoride, salt, <span>white cubic crystals, soluble in methanol and ethanol.</span>
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3 years ago
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Which elements are magnetic in the periodic table?
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METALS ARE MAGNETIC(and maybe metalloids)

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Student follow up
sleet_krkn [62]

Answer:

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3 years ago
Which step in the scientific method is conducted before a controlled experiment?
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4 0
3 years ago
The conversion of acetyl chloride to methyl acetate occurs via the following two-step mechanism: Reaction sequence of acetyl chl
Svetlanka [38]

If the concentration of acetyl chloride  is increased ten times the rate of reaction is increased ten times.

The conversion of acetyl chloride to methyl acetate is a substitution reaction. Recall that a substitution reaction is one in which a moiety in a molecule is replaced by another.

In this reaction, the CH3O- ion replaces the chloride ion. In the first step, the CH3O- ion attacks the substrate in a slow step. This creates a tetrahedral intermediate. Loss of the chloride ion yields the  methyl acetate product.

The rate determining step is the formation of the tetrahedral intermediate. Since the reaction is first order in the acetyl chloride, if its concentration is increased ten times the rate of reaction is increased ten times.

Learn more: brainly.com/question/5624100

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