Which sequence describes the result of increasing the number of gas particles in a container? A.) fewer collisions --> lower collision force --> lower pressure B.)more collisions --> lower collision force --> lower pressure. C.) fewer collisions --> greater collision force -->higher pressure. D.)more collisions --> greater collision force --> higher pressure

Answers

Answer 1
Answer:

Answer: Option (D) is the correct answer.

Explanation:

It is known that relation between pressure and force is that, pressure equals force divided by area.

Mathematically,      P = (F)/(a)

where              P = pressure

                        F = force

                        a = area

Hence, when there is increase in number of gas particles in a container the there will be more number of collisions due to increase in number of particles. This will lead to greater collision force and as a result there will be increase in pressure because force is directly proportional to pressure.

Thus, we can conclude that the sequence more collisions --> greater collision force --> higher pressure best describes the result of increasing the number of gas particles in a container best describes the result of increasing the number of gas particles in a container.

Answer 2
Answer: I believe the correct response is D. More collisions that result in greater collision force and higher pressure.

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Why is the sun yellow?

Answers

Answer:

The sun is not yellow.

Explanation:

sun can look yellow or red whenever we see the sunlight at sunrise or sunset, when it becomes low on the horizon. That's only how the wavelengths of the low frequency (green , blue, magenta) are dispersed across the planet's crust, just as the tiny waves are distributed along the sea by huge rocks.

Answer:

Its because of the Earth's atmosphere |  The sun is a yellow dwarf star | If you saw the sun from space, it would actually look white

Explanation:

What is the percent by mass of water in Na2SOa 10H20?total mass of element in compoundUse%Elementx 100molar mass of compoundO 5.59%O 11.26%44.08%O 55.92%

Answers

Molar mass Na₂SO₄. 10H₂O = 322.19 g/mol

Molar mass  H₂O = 18.0

% Element =  molar mass / total mass x 100

% Element = 18 / 322,19 x 100 

% Element =  5.59 %

Answer A

hope this helps!

Answer:

The answer is D.55.92%

Explanation:

Explain the iodine clock reaction.

Answers

Iodine clock reaction is a combination of hydrogen peroxide and sulfuric acid. When these are poured together, there is no reaction at first, but after time, a colored reaction will happen to the liquid and may change back to the original color. This idea was discovered by Hans Landolt in the late 1800s.

Which of these laboratory techniques is best to separate from a liquid to recover the liquid

Answers

It depends on what you are separating from the liquid. If it is a solid you can just filter it or put it in a centrifuge. If it is a dissolved solvent you might need to use something like chromatography. I am not very sure though. I hope this helps. Let me know if anything is unclear.

SI units are useful because they are all related by multiples of ____.

Answers

Answer:

SI units are useful because they are all related by multiples of 10.

Explanation:

International System of Units (abbreviated SI) is a system of measurement units, which is used almost everywhere in the world.

A unit system is a set of units of consistent, standard and uniform measurement. In other words, a unit system is a set of units (grouped and formally defined) that is used as a standard. Normally, in a system of units, few basic units are defined and from these several derived units are defined.

The International System of Units defines seven basic units, also called fundamental units, which define the corresponding fundamental physical quantities, chosen by convention, and which allow to express any physical quantity in terms or as a combination of them. The other units are obtained by combining the basic units.

The basic units of this system are:

  • Length-meter (m)
  • Mass-kilogram (kg)
  • Time- second (s)
  • Electric current intensity - ampere (A)
  • Temperature - Kelvin (K)
  • Amount of substance - mol (mol)
  • Light intensity - candela (cd)

The SI is based on the metric system, which is a system of units that are related to each other by multiples or submultiples of 10.

Then, SI units are useful because they are all related by multiples of 10.

SI units are useful as they are all related by multiples of 10.

Assume you do not know which peak in GC chromatogram corresponds to each alkene (and you are not sure whether the one with lower boiling point will appear first). Propose how you can identify which peak corresponds to which alkene in terms of "spiking products"

Answers

GC chromatograms often already have a library of compounds to determine what the substance is. In case the compound cannot be found in the library, one common alternative scientists use when performing is spiking.

Spiking involves gradually increasing the concentration of one specific compound, and looking for a rise in peak height. Here, you can identify which peak corresponds to the compound you spiked. You can do this for each alkene, to determine its peak and retention time.