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.
The best and most correct answer among the choices provided by the question is the third choice "In an unexpected twist, the uneducated “rapscallions” are actually quite clever and successfully outwit the townspeople. "
<span>Adventures of Huckleberry Finn is a novel by Mark Twain, first published in the United Kingdom in December 1884 and in the United States in February 1885.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
A. If you need a basketball, you can borrow our's.
Yana is a village located in the forest of kumta
Aquí el fue el que descubrió America
