1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
igor_vitrenko [27]
3 years ago
15

A student added a piece of limestone to a solution of hydrochloric acid. Based on observations, the student infers that a chemic

al reaction took place. Which of the following is an observation that directly supports the inference?
O A. Bubbles formed.
OB. The limestone dissolved.
O C. The solution became doudy.
OD. The volume of the solution increased​

English
1 answer:
Helga [31]3 years ago
5 0

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.

You might be interested in
55 points!!! Write a summary about A Wrinkle in Time!!! Please fast
vesna_86 [32]

A "Wrinkle in Time" by Madeleine L’Engle is a science fiction novel for young readers, disseminated by Farrar, Straus, and Giroux in 1962.

<h3>What are the names of the characters in this fiction?</h3>

The names of the characters are Margaret “Meg” Murry, her brilliant younger brother Charles Murry, and Calvin O’Keefe on a pilgrimage across the cosmos to retrieve Meg’s father from the clasps of a malignant existence.

The novel is conveyed from the viewpoint of immature Meg. Meg’s father vanished without directive several years ago, and Meg likes frivolity more than for him to return.

The family is dwelled by the unfamiliar Mrs. Whatsit, who exposes a horrified Mrs. Murry that tesseracts are genuine. When prompted, Meg’s mother won’t clarify what a tesseract is to her children.

Meg, Calvin, and Charles Wallace tesser to Camazotz, where Mrs. Ws cannot support them. There, they understand it, the being that regulates everyone on the earth.

The tesser impairs Meg, and the occupants of this new planet, Ixchel, nurse Meg back to healthiness. Mrs. Whatsit, Mrs. Who, and Mrs. Which reach on Ixchel. They support Meg tesser back to Camazotz to protect Charles Wallace, departing her with the cryptic notification to operate the thing she has that it does not maintain.

Therefore, it is well described above.

To learn more about  A Wrinkle in Time, refer to the link:

brainly.com/question/18914514

#SPJ1

4 0
2 years ago
As you plan when writing you should create a one-sentence of your what?
Brut [27]

Answer:

A claim or main idea possbilby, but look back thorugh your reading/lessons to double check

Explanation:

7 0
3 years ago
If the gas pedal becomes jammed, press hard on the<br> gas pedal.<br> a. true<br> b.<br> false
Salsk061 [2.6K]

Answer:

false

Explanation:

5 0
2 years ago
Tell me i did not make a point.. LOL.
Alex

Answer:Um what this ?

Explanation:

4 0
3 years ago
How did William Wordsworth organize I wandered lonely as a cloud for readers
nexus9112 [7]
Skisieosoodiejsokekekkejekejekbejbekejne
5 0
3 years ago
Other questions:
  • If i was writing a six page paper on boxing (the sport) what would be the main topics??
    8·1 answer
  • I am writing a descriptive narrative, about a moment in time. It has to be about all of the emotions, touch, taste, smell, sight
    8·1 answer
  • Examine the following passages to determine whether they contain arguments. For those passages that do contain arguments, rewrit
    10·1 answer
  • The monsters are due on maple street what is sallys point of view
    15·1 answer
  • Which of the following is a skill that would contribute to someone’s academic identity?
    8·1 answer
  • Pick a sentence that expresses a celebratory message
    14·1 answer
  • How are bacteria different from humans?
    7·1 answer
  • How does this excerpt prove that Odysseus’s men caused their own problems?
    9·1 answer
  • Which statement about the Internet is true? A. The Internet is a new form of media, but fortunately, all of the conventions, rul
    8·1 answer
  • How do men treat mrs hale and mrs peters?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!