The balanced chemical equation is :
Moles of ,
Now, by given chemical equation , we can see 2 mole of react with 1 mole of
.
So , 2.27 mole react with :
Mass of oxygen is :
Therefore, mass of oxygen in grams produced is 18.16 g.
Hence, this is the required solution.
Answer: Option (D) is the correct answer.
Explanation:
The chemical reaction equation will be as follows.
This means a new substance has been formed and a chemical change has taken place.
A chemical reaction in which heat energy is absorbed by the reactant molecules is known as an endothermic reaction.
For example,
On the other hand, a chemical reaction in which heat energy is released by the reactant molecules is known as an exothermic reaction.
For example, is an exothermic reaction.
Thus, we can conclude that in the given situation the beaker most likely felt warm because a chemical reaction was producing a new substance.