Molecules are different from atoms because they
2 answers:
Answer: Option (D) is the correct answer.
Explanation:
Molecules are defined as the substances which contain same type of elements which are chemically combined to each other.
For example, is a molecule which contains two same atoms that is, chlorine atoms.
In this molecule, the atoms are chemically combined together due to sharing of electrons. Hence, they tend to form covalent bonds.
Therefore, we can conclude that molecules are different from atoms because they contain chemical bonds.
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Al
Explanation:
The limiting reactant will be Al:
4Al + 3O₂ → 2Al₂O₃
The limiting reactant is the reactant in short supply in a chemical reaction.
Given parameters:
Mass of Al = 30g Molar mass = 27g/mol
Number of moles = =
Number of moles of Al = 1.111 mole
Mass of O₂ = 30g, molar mass = 32g/mol
Number of moles = = 0.94mol
In the reaction:
4 moles of Al reacted with 3 moles of O₂
1.11moles of Al will require = 0.83mole to react
But we have been given 0.94mole of O₂. This is more than required.
Therefore O₂ is in excess and Al is the limiting reactant.
Learn more:
Limiting reagents brainly.com/question/6078553
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