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
Marianna [84]
2 years ago
12

Which best describes the changes occurring to the earth's surface over time?

Chemistry
1 answer:
uysha [10]2 years ago
7 0

Answer:

I would say the answer is 2

You might be interested in
What would indicate that a physical change takes place when copper is drawn into wire? Copper is heated, changing its molecular
egoroff_w [7]
Copper is reshaped, but it's molecular structure does not change. So B.
7 0
2 years ago
Read 2 more answers
Please help!! I think this is true but I really need help.
Dennis_Churaev [7]
False, because generally forensics collect the evidence to make sure the evidence doesn’t get damaged or tainted.... hope this helps
8 0
3 years ago
0.0278, how many significant figures
My name is Ann [436]

Answer:

There are three significant figures

Explanation:

When counting sig figs you don't count the zeros unless it is between a number greater than zero. The two zeros aren't between the greater numbers so there are only 3.

3 0
2 years ago
How sig figs are in 28.0
Nadya [2.5K]
There are exactly (a). 10.0 and (b). 28.0
5 0
3 years ago
Read 2 more answers
What fraction of the carbon dioxide exhaled by animals is generated by the reactions of the citric acid cycle
puteri [66]

Answer:

1/3

Explanation:

Pyruvate is produced by the glycolysis in cytoplasm. The oxidation of pyruvate takes place in mitochondrial matrix.  

Pyruvate is converted to acetyl-CoA in the reaction given below:

Pyruvate + NAD⁺ + CoA-SH ⇒ acetyl-CoA + NADH + CO₂

1 molecule of carbon dioxide is eliminated from 1 molecule of pyruvate.

Also,  

2 molecules of carbon dioxide is eliminated from 2 molecules of pyruvate (as glucose on glycolysis yields 2 molecules of pyruvate).

Also, acetyl-CoA further goes into the citric acid cycle and produces 2 molecules of carbon dioxide.

Thus pyruvate produces total 3 molecules of CO₂  and hence glucose produces 6 molecules of CO₂ (as glucose on glycolysis yields 2 molecules of pyruvate)

Thus,

<u>Fraction = 2/6 = 1/3</u>

4 0
3 years ago
Other questions:
  • What is the vapor pressure of a 45.0 % solution of glucose, c6h12o6, at 90.0°c, given that the vapor pressure of pure water at t
    13·1 answer
  • Your lab partner accidentally measures out too much of a substance in the lab. when the experiment is complete, you have leftove
    6·1 answer
  • A sample of a substance has a mass of 78.9 g and a volume of 84.3 cm3 what is the density?
    12·1 answer
  • Freon−12 (CF2Cl2), widely used as a refrigerant and aerosol propellant, is a dangerous air pollutant. In the troposphere, it tra
    9·1 answer
  • How does the average reaction rate differ from an instantaneous reaction rate?
    6·1 answer
  • What happens when copper sulphate reacts with hydrogen<br>sulphide?​
    12·2 answers
  • During the time period than an El Nino is occurring, there is a buildup of cold water of the west coast of South America there i
    15·1 answer
  • A nurse measures the volume of a drop of medicine. The volume of 1 drop of medicine is 0.84 mL. What is the volume in deciliters
    11·1 answer
  • All of the following are physical properties except a. density b. colour c. reaction with oxygen d. melting point
    7·2 answers
  • Determine the empirical formula of a compound that was found to contain 6.412 g potassium, 2.292 g n, and 7.871 g o.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!