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
Brums [2.3K]
3 years ago
13

I need help answering 14 and 15

Chemistry
1 answer:
Debora [2.8K]3 years ago
4 0

Answer:

14 is D and 15 is C

Explanation:

You might be interested in
Does ionic or covalent form solid crystals?
Alekssandra [29.7K]

Answer:

I hope it help

your welcome

5 0
3 years ago
What happens to glucose and oxygen that is produced by plants during photosynthesis ​
Virty [35]

Answer:

Respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce use able cellular energy. This energy is used to fuel growth and all of the normal cellular functions.

Short Answer

They combine to produce cellular energy.

5 0
3 years ago
Read 2 more answers
Which unstable element is used to determine the age of volcanic rock?
77julia77 [94]

<em><u>Answer:</u></em>

Potassium.

<u><em>Explanation:</em></u>

Therefore, the answer is Potassium. You might think, that because we were talking about Argon as well, the answer is both of them, but no. Everything starts with Potassium but it decays into Argon during the process.

6 0
3 years ago
Read 2 more answers
Calculate the eccentricity of an ellipse. The distance between the foci is 5.2 and the length of the major axis is 20.6.Round of
Dominik [7]

Answer:

The eccentricity of the ellipse is 0.252.

Explanation:

The eccentricity of an ellipse (c), dimensionless, can be determined by means of the following expression:

e = \frac{\bar c}{\bar a} (1)

Where:

\bar c - Distance between the foci, dimensionless.

\bar a - Length of the major axis, dimensionless.

If we know that \bar c = 5.2 and \bar a = 20.6, then the eccentricity of the ellipse is:

e = \frac{5.2}{20.6}

e = 0.252

The eccentricity of the ellipse is 0.252.

8 0
3 years ago
4. What parts of Dalton’s atomic theory no longer agree with the current picture of the atom? Provide an answer using 3 – 4 sent
pogonyaev
<span>Since you did not show any picture, I will be describing Dalton’s atomic theory. The scientist thought that the atom was the smallest particle in the universe is John Dalton. He established five theories relating atoms. One, elements are made of extremely small particles called atoms. Two, atoms of different element have different sizes, mass and physico – chemical properties. Three, atoms cannot be divided further, destroyed or created. It also follows the law of conservation of energy. Fourth, atoms can combine to form compounds. And lastly, in chemical reaction, atoms can be combined, separated or rearranged. </span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which methods will help you properly identify pH with indicator paper? Check all that apply. Set a piece of pH paper in front of
    12·2 answers
  • You are given a sample of a Group II metal chloride, but the identity of the metal is unknown. Knowing that all Group II metal c
    14·1 answer
  • Can anyone help me if possible?
    5·1 answer
  • What is the pH of a 0.1 M phosphate buffer (pKa = 6.86) that contains equal amounts of acid and conjugate base?
    5·1 answer
  • What is the molar mass of an element?
    14·1 answer
  • Calculate the ph of a buffer that is 0.145 m hc2h3o2 and 0.202 m kc2h3o2. The ka for hc2h3o2 is 1.8 × 10-5.
    13·1 answer
  • If equal volumes of 0.1 M HCl and 0.2 M TRIS (base form) are mixed together. The pKa of TRIS is 8.30. Which of the following sta
    14·1 answer
  • 1) The heat of combustion for the gases hydrogen, methane and ethane are −285.8, −890.4 and −1559.9 kJ/mol respectively at 298K.
    7·1 answer
  • Which soil horizon contains the most organic matter?
    13·1 answer
  • 2, 3-diethyl–4-octene  what is structure of this pls help​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!