Answer:
A. Bubbles formed
Explanation:
When a student added a piece of limestone to a solution of hydrochloric acid, bubbles are formed.
The bubbles are as a result of the CO2 gas that is formed.
Below is the reaction:
CaCO3+2HCl → CO2+H2O + Ca++ + 2Cl-
From the left hand side, we can see that the reaction is with limestone and hydrochloric acid. Their reaction forms carbon dioxide gas (CO2), water (H2O), dissolved calcium (Ca++) and dissolved chlorine (Cl-) on the right hand side.
With due observation, bubbles will be seen evolving from the reaction. These bubbles formed is the carbon dioxide gas which reveals that a reaction is taking place.
Answer: This book is mostly about a man who was sleeping he was dreaming and when he wakes up he was a big bug and his mother was in his door his family think he was sick and his mother was telling him gregor are you fine and when gregor talk it was like a tiny noise and gregor thought his boss might fire him and mr k went to gregor home .when gregor open the door and they saw a big bug and mrs samsa yield so hard and his family w2ant to kill the bug at the end of the story gregor died and all the family were sad .
Answer:
Enduring hard times strengthens character.
Explanation:
The theme that can be found in both "If" and The Jungle Book by Rudyard Kipling is that enduring hard times strengthens character.
This is because, in IF and Jungle Book, there are circumstances that come up against the protagonists and other minor characters that sees hard times test their character and they finally triumphing and having their character strengthened.
In subjunctive mood, a verb would be doubtful or un-factual.
