The coefficient for aluminium is 4.
Explanation:
We have the following chemical reaction:
Al + O₂ → Al₂O₃
In order to balance the chemical equation the number of the atoms entering the reaction should be equal to the number of atoms leaving the reaction.
2 Al + 3/2 O₂ → Al₂O₃
However we need integer numbers so we multiply everything with 2.
4 Al + 3 O₂ → 2 Al₂O₃
The coefficient for aluminium is 4.
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Answer:
5
Explanation:
According to the Law of Conservation of Matter, the mass of the products in a chemical reaction must equal the mass of the reactants.
5O2 = 10 Oxygen atoms
In 2POx there must be 10 Oxygen atoms too. => x = 5
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Hope it can help you.
Answer : Electron affinity (Eea) of an atom or molecule can be defined as the amount of energy released or spent when an electron is being added to a neutral atom or molecule in the gaseous state to form a negative ion.
Chlorine is considered to be the element which has highest electron affinity in the modern periodic table.
The general formula is X + 
----> 
+ energy
It is found that nonmetals have more positive Eea than metals.
Electron affinity increases across the group from left to right in the modern periodic table. Elements with small nucleus have high electron affinity.
Answer:
n = 5
Explanation:
methane => 1 Carbon => CH₃
ethane => 2 Carbons => C₂H₆
propane => 3 Carbons => C₃H₈
butane => 4 Carbons => C₄H₁₀
pentane => 5 Carbons => C₅H₁₂
hexane => 6 Carbons => C₆H₁₄
heptane => 7 Carbons => C₇H₁₆ => CH₃(CH₂)₅CH₃
Octante => 8 Carbons => C₈H₁₈
Nonane => 9 Carbons => C₉H₂₀
Decane => 10 Carbons => C₁₀H₂₂
