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:
C, would be the correct answer .
Answer:
chloe describes what it’s like to be a “gifted” student at the ASD, identifies some of the other students in her class (including hyper-competitive Abigail and hyper-intelligent Noah), and then narrates the arrival of Donovan at the school – specifically, his first appearance in her robotics class. Noting that robotics is one of her specialties, Chloe describes how, almost immediately after arriving, Donovan accidentally breaks off part of the robot currently under construction, and just as immediately, starts a debate about what name the robot should be given, a conversation ridiculed by the controlling Abigail, who also tells Chloe that she went to elementary school with Donovan and thought he was pretty much just “normal”. The thought of being in a class with someone “normal” interests Chloe...
Explanation:
this is a summary of 4-6
They show how two parts of the sentence are related because a conjunction is the glue that holds words phrases sm clauses together
