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
1. "Please tell the chef that this stcak is too rare and it needs to be cooked for a bit longer
viva [34]

1. Imprecise. The chef will not know how long he has to cook.

2. Vagueness. We are not sure how many politician exactly.

3. Incomplete meaning. We just know tall students are allowed to play basketball, but there are no further explanations.

4. Vagueness. We are not sure how many lies do the Prime Minister say.

5. Lexical ambiguity. The word "suspects" have two meanings in this sentence. The first one is a person thought to be guilty of a crime or offence. The second is a person who commits robbery.

6. Syntactic abiguilty. We are not sure whether peter's wallet was stolen by General Office or was found by General Office.

7. I am not sure with this question.

8. Equivocation. Common has been used for two times but with different meanings.

9. I am not sure with this question.

10. Referential ambiguity. We are not sure which article exactly. They should provide the name of the article

Hope this help you

8 0
3 years ago
An image about a certain group of people that you assume is true
nikklg [1K]
The correct answer is (C).
4 0
2 years ago
Read 2 more answers
What are all 20 linking verbs could you please teach me?​
makkiz [27]

Answer:

its a site called ixl.com search  linking verbs and it will give you 15 free practice questions to help you understand i use it so yea i would highly recommend you try it

Explanation:

CAN YOU PLEASE MARK ME BRAINLIEST THANK YOU HAVE A NICE DAY!

7 0
2 years ago
Which is the best answer
AlekseyPX
C is the best answer I guess
7 0
2 years ago
If you had to give up one of your five senses, what would it be, and why? (Sight, hearing, taste, smell or touch).
Romashka [77]

Answer:

Smell

Explanation:

Because, people always wanna drop them stink farts next to me and it smells like all the sewers in the world combined.

6 0
2 years ago
Read 2 more answers
Other questions:
  • According to "Make it New": Early Modernism, which historical events had the most significant impact on modernist writing? Einst
    9·2 answers
  • What is an allegory?
    13·2 answers
  • Which item below connects jansky's and reber's work to the way scientists analyze black holes today?
    8·2 answers
  • the first review on the Harry potter movie was Favorable. Many people attended and enjoyed the movie. Some people even saw the m
    14·2 answers
  • What singular ambition did all the boys have in the town where Mark Twain<br> grew up?
    13·2 answers
  • The story “Raymond’s Run” is about a girl named Squeaky who is responsible for caring for her brother, Raymond. We learn that Ra
    6·1 answer
  • :- what creative way of acting​
    13·2 answers
  • What is the irony of Rule of the Game by Amy Tan?
    7·1 answer
  • Help pls it due tomorrow
    14·1 answer
  • 1. Aman: I want to speak English more fluently.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!