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Ludmilka [50]
3 years ago
8

A solid element that is malleable, a good conductor of electricity, and reacts with oxygen is classified as a(1) metal(2) metall

oid(3) noble gas(4) nonmetal
Chemistry
2 answers:
sukhopar [10]3 years ago
6 0
Metalloid is the closest because noble gases are obviously out, nonmetals are terrible conductors, and metals are not malleable 
Leokris [45]3 years ago
3 0

Answer: Option (1) is the correct answer.

Explanation:

Metals are the substances which are malleable and ductile. They are lustrous and are good conductors of heat and electricity.

Metals do react with oxygen and results in the formation of metal oxides.

Thus, we can conclude that a solid element that is malleable, a good conductor of electricity, and reacts with oxygen is classified as a metal.

 

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Plz answer these questions : <br><br>​
SSSSS [86.1K]

Answer:   2) see below

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<u>Explanation:</u>

2)

Step 1: Crushing & Grinding   CuFeS₂(s)→  CuFeS₂(s)

Step 2: Froth Flotation           CuFeS₂(s)---->  CuFeS₂ (l)

Step 3: Roasting   2CuFeS₂(l) + 3O₂(g) → 2FeO(s) + 2CuS(s) + 2SO₂(g)

Step 4: Converting matte to blister Cu₂S(l) + O₂(g) → 2Cu(l) + SO₂(g)

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Step 6: Electrolytic Refining   Cu(s) → Cu(s)

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<em>see diagram below for illustration of steps</em>

3) When silver chloride (solid) is exposed to sunlight, it decomposes into silver (solid) and chlorine (gas).

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3 0
3 years ago
What will be the charge of the ion formed from each of these atoms ?
Galina-37 [17]

Answer:

Si14- Si^4+

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Explanation:

The elements shown in the answer have their common ions written beside them.

Silicon mostly forms positive ions in oxyacids and complex ions. Arsenic mostly forms its anion. Magnesium forms only the +2cation just as rubidium only forms the +1 cation. The fluoride ion is F^- while tin may for a +2*or +4 cation. Germanium usually forms the +4 cation.

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3 years ago
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The enthalpy change for the formation step of this intermediate is 136 kJ/mol.

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The enthalpy of reaction can be obtained from the enthalpies of formation of the species involved. The enthalpy of reaction is the heat evolved or absorbed in a reaction.

Thus, the enthalpy change for the formation step of this intermediate is 4 *  34 kJ/mol = 136 kJ/mol.

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The electric current is an electrical energy.

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