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KatRina [158]
3 years ago
12

Which of the following best describes the electron cloud model? A. It shows that electrons usually carry a negative charge. B. I

t shows that electrons remain in high-energy subshells. C. It shows that electrons move quickly in circular orbits. D. It shows that the electrons within an atom do not have sharp boundaries.
Chemistry
1 answer:
irakobra [83]3 years ago
8 0
<span>D. It shows that the electrons within an atom do not have sharp boundaries.</span>
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A student is instructed to design a device that can allow one user to hear a voice of another surer a distance of 5 kilometers w
Scorpion4ik [409]

Answer:

A device designed to transmit electromagnetic waves through the air should  be developed.

6 0
3 years ago
A gas has an initial volume of 3.0 L with a pressure of 0.62 atm. What will be the new pressure if the volume changed to 1.0 L?
irina1246 [14]

Answer:

The new pressure will be 1.86 atm.

Explanation:

As the volume increases, the gas particles (atoms or molecules) take longer to reach the walls of the container and therefore collide less times per unit time against them. This means that the pressure will be less because it represents the frequency of gas strikes against the walls. In this way pressure and volume are related, determining Boyle's law.

Boyle's law says that at constant temperature, the volume of a fixed mass of gas is inversely proportional to the pressure it exerts:

P*V=k

To determine the change in pressure or pressure during a transformation to constant pressure, the following expression is applied:

P1*V1=P2*V2

In this case:

  • P1= 0.62 atm
  • V1= 3 L
  • P2= ?
  • V2= 1 L

Replacing:

0.62 atm* 3L= P2* 1 L

Solving:

P2=\frac{0.62 atm*3L}{1L}

P2= 1.86 atm

<u><em>The new pressure will be 1.86 atm.</em></u>

7 0
3 years ago
Scientists are now able to use the genetic code of organisms to find out more about their evolutionary history. How is this most
Elza [17]

The group of choices associated with the given question are as follows:

Organisms once thought to be unrelated may be found to be related.

Mode of nutrition of some organisms may change.

Organisms that do not have a backbone may develop one.

All multicellular organisms may be found to be prokaryotes

Answer:

The correct answer would be - Organisms once thought to be unrelated may be found to be related

Explanation:

Classification of the organisms is based on the shared characteristics and structural or environmental similarities of the organisms which are modified and evolved during the period of time. It is also known as life sciences evolve and genetic code provides more accurate information.

These evolutionary changes and will lead to certain organisms that are once thought to be unrelated organisms that may actually be related based on a genetic code. These codes have every small and accurate change that occurs and can also find out when these changes occured.

7 0
3 years ago
Organism that consist of many cells?
Tanya [424]

Answer:

Multicellular Organisms.

Explanation:

Hi

3 0
3 years ago
what if you scored a 0.80 on a test what. fraction of the test in simplest form did you answer correctly
postnew [5]
80
------
100

or

4
-------
5

if u want the simplest terms
7 0
4 years ago
Read 2 more answers
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