Answer:
Oxygen gas
Explanation:
Given expression:
CH₃CH₂OH + 3O₂ → 2CO₂ + 3H₂O
Number of moles of oxygen gas = 1 mole
Number of moles of ethanol = 1 mole
Unknown:
The limiting reactant = ?
Solution:
The limiting reactant is the reactant in short supply in a chemical reaction. To find this specie, we always us the number of moles.
From the equation of the reaction:
1 mole of ethanol would require 3 moles of oxygen gas
But we have been given just 1 mole of oxygen gas instead of 3moles.
Therefore, oxygen gas is the limiting reactant.
It is A because it has a lower activation emery than like B
Balanced chemical equation: S(s) + O₂(g) → SO₂(g).
Sulfur change oxidation number from 0 to +4 (oxidation) and oxygen change oxidation number from 0 to -2 (reduction).
Sulfur dioxide (SO₂) is very common volcanic gas.
Fossil fuel combustion increases the acidity of rain because the sulfur dioxide is produced.
Because of fuel combustion, sulfur dioxide goes up into the atmosphere as the hot gases rise, than it reacts with water and oxygen in the air and form sulfuric acid.
Lead: Pb, oxygen: O, and silver: Ag
Shape and size doesn't affect the density of an object but temperature does affect the density of an object because the molecules act differently in different temps.
