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dsp73
3 years ago
6

A gaseous mixture of o2 and n2 contains 35.8 % nitrogen by mass. what is the partial pressure of oxygen in the mixture if the to

tal pressure is 245 mmhg ?
Chemistry
1 answer:
lubasha [3.4K]3 years ago
5 0
The partial pressure is the amount of linguistic compound there is which makes the lagitude of the element 64.663
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HELP i need the answer to this science question:
S_A_V [24]

Answer:

1. Convection: c. Transfer of energy by movement of matter.

2. Radiation: e. Transfer of energy by waves, often through empty space.

3. Thermal Energy: a. The total energy an object has. The more stuff you have the higher this will be.

4. Conduction: d. Transfer of energy by contact between two things.

5. Heat: b. Any transfer of thermal energy

______________________

<h2>Explanation(s):</h2>

<u>Explanation of #1</u>:

Convection is one of the three ways thermal energy is transferred. Convection is usually defined as the transfer of heat by the circulation or movement of the heated parts of a liquid or gas. An example of convection on earth is convection currents. Convection currents are the movement of fluid as a result of differential heating or convection. In the case of the Earth, convection currents refer to the motion of molten rock in the mantle as radioactive decay heats up magma, causing it to rise and riving the global-scale flow of magma.

<u>Explanation for #2:</u>

Electromagnetic waves are waves produced the acceleration of an electric charge and propagated by the periodic variation of intensities of, usually, perpendicular electric and magnetic fields. This transfer of energy by waves is known as radiation. Or in other words, this kind of transfer is done through the propagation of electromagnetic waves, that carry energy, without need of a material medium, in empty space. Radiation is usually defined as the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and absorbed by another body.

<u>Explanation for #3</u>:

Thermal energy can be defined in 3 different ways. First, it can be defined as the internal energy of a system in thermodynamic equilibrium due to its temperature. Second, A form of energy; sensible energy; heat. Third and last, the energy released by an explosion. Thermal energy is produced through the movement of particles within a system or object, it can be referred to as kinetic energy. Kinetic energy is usually defined as the energy of a body or a system with respect to the motion of the body or of the particles in the system.

<u>Explanation of #4</u>:

Conduction is usually defined as the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts.  Conduction is the transfer of heat through direct touch of molecules. Conduction is the transfer of thermal energy with no transfer of manner. It occurs when two materials touch. The heat movement in conduction is within and via the body itself. In contrast, heat transmission through thermal radiation frequently occurs between entities that are geographically separated. Heat can also be transferred by a mix of conduction and thermal radiation.

<u>Explanation of #5</u>:

As a noun, heat is usually defined as the state of a body perceived as having or generating a relatively high degree of warmth. There are 3 types of ways heat can be transferred which is via conduction, convection, or radiation. Heat produces thermal energy which is transmission through these 3 different processes. Thermal energy is the internal energy of a system in thermodynamic equilibrium due to it's temperature. Thermal energy is produced through heat and is transmission through the 3 processes in different ways (mentioned above obviously).

___________

<h3>additional comment:</h3>

Definitions:

Radiation is simply the energy that is emitted by a body that has energy. Even human beings radiate energy (infra red radiation).

Convection is the transfer of heat through fluid (liquid or gas). It probably relates to astronomy in that due to gravity, a star's core is much hotter than the rest of it. The heated plasma rises to the surface like boiling water, where the heat is absorbed by the surrounding plasma through convection , then it cools and sinks down to the core again.

In the atmosphere conduction is the transfer of heat by direct contact. The best example would be the heating of the atmosphere that is directly in contact with the Earth (first few feet).

On a particle level this is energy transferred by the particles colliding with and passing energy into adjacent particles.

5 0
2 years ago
2. Which of the following solution contains more salt?<br> A. 3M<br> B. 1M<br> C. 0.5M<br> D. 0.25M
Tanya [424]

Answer: 0.25M

Explanation: Because of the highest concentration of water and, if they are all the same volume, the greatest amount of water assuming it is a solid solute in a water solution.

5 0
3 years ago
A crystal of potassium permanganate is placed in a beaker of water. The purple colour of potassium permanganate gradually spread
cricket20 [7]

When the crystals of potassium permanganate are preserved in water, the purple-coloured crystals of potassium permanganate break further into smaller particles that populate the distance between the molecules of water imparting a purple colour to the water. This is an example of diffusion.

<h3>What are the two conclusions given out in the method of diffusion?</h3>

Diffusion is the process of movement of solvent from higher concentration to lower concentration through a semipermeable membrane. So, we can form the decision that it cannot occur through a thick membrane from which small molecules cannot pass through.

<h3>What is difference between osmosis and diffusion?</h3>

Osmosis is the direction of solvent particles from a solution that is diluted to a more concentrated one. In contrast, diffusion is the movement of particles from a higher concentration region to a part of lower concentration.

To learn more about potassium permanganate, refer

brainly.com/question/24204185

#SPJ9

6 0
1 year ago
5. Location A is in the center of a large desert. What factor could account for its low annual
Anna11 [10]

Given what we know about the mechanisms surrounding weather, we can confirm that Large deserts receive less rainfall due to the lack of bodies of water and "rainshadows".

  • Rainshadow is a term used to describe the effects of nearby mountains on the rainfall amounts of a desert. The mountain causes the air to rise greatly and lose moisture. This moisture is received by the mountain, <em><u>which means that it does not reach the desert area. </u></em>

  • Another limiting factor for the amount of rainfall received by deserts is the lack of bodies of water in the area. Once a desert is formed, <em>it tends to lack large bodies of water</em>. This limits the rainfall it receives given that there is no water nearby to evaporate and <em><u>cause the formation of clouds. </u></em>

To learn more visit:

brainly.com/question/1051337?referrer=searchResults

4 0
2 years ago
Which chemical group is most likely to be responsible for an organic molecule behaving as a base
Ksju [112]

Answer:

The answer to your question is -NH₂ (amino group)

Explanation:

Organic bases are proton acceptors and they most of the times have nitrogen in their structure.

Organic bases have nitrogen in their structure.

Example of bases:

Alkanamines

Imidazole

Guanidine

Pyridine

Hydroxides (they do not have nitrogen but, are organic bases=

7 0
3 years ago
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