11) When sodium metal is subjected to violet light, it causes the photoelectric effect. However, red light does not affect
the sodium. Explain this phenomena.

Answers

Answer 1

The phenomena in which violet light causes photoelectric effect and red light does not is because red light does not achieve the minimum frequency for the phenomenon to occur but violet light does.

The phenomenon in which a substance emits electrons when light is incident upon it is called the photoelectric effect.

This electron would not be emitted if the frequency of the light does not exceed a minimum frequency called the threshold frequency.

Since in the case of the sodium metal, violet light causes the photoelectric effect while red light does not.

This implies that red light does not exceed the minimum frequency for the photoelectric effect to occur, but violet light does thereby causing the photoelectric effect to occur.

So, the phenomena in which violet light causes photoelectric effect and red light does not is because red light does not achieve the minimum frequency for the phenomenon to occur but violet light does.

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Related Questions

suitable electrolytes for fuel cells​

Answers

Answer:

Alkaline fuel cells use an alkaline electrolyte such as potassium hydroxide or an alkaline membrane that conducts hydroxide ions rather than protons.

Explanation:

OR USE GATORADE AND POWERADE. BE A MAN.

Which of the following correctly completes the statement?
Cations are always _____ than the parent atom and anions are always _____ than the parent atom.

Answers

Answer: smaller, larger

Explanation:

Cations are always {smaller} than the parent atom. Anions are always {larger} than the parent atom.

Cations are always smaller than the parent atom, and anions are always greater than the parent atom.

What is parent atom ?

The term "parent atom" refers to an atom that has not yet undergone any chemical transformation. A parent atom is one that is discovered in its initial state.

Because they contain fewer electrons while maintaining the same nuclear charge, cations are always smaller than their parent atoms. Because the protons in the nucleus are holding the remaining electrons more tightly, their radii are less than those of the parent atoms. In the case of anion, this is the opposite.

Due to variations in electron-electron repulsion, the ionic radii of cations and anions are always less or bigger than the parent atom, respectively. The trends in ionic radius follow those in atomic size.

Thus, Cations are always smaller than the parent atom, and anions are always greater than the parent atom.

To learn more about parent atom, follow the link;

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carbon reduction process is not applied for extraction of alkali metal . why ?​

Answers

Answer:

The alkali metals are the highly electropositive metals. Highly electropositive metals cannot be extraction carbon reduction process, because these metals do not react with carbon

Explanation:

how long does it take to rehydrate after being dehydrated

Answers

Answer:

up to 120 minutes to digest water and rehydrate your body

How might a molecule have a very strong molecular dipole?

Answers

Answer:

When you make the electronegativities of A(Positive partial charge) and C (Negative Partial charge) less and have B with a strong electronegativity to create a very strong molecular dipole. ... Both molecules possess strong molecular dipoles.

Help with this question which I attached a picture of

Answers

[tex]\huge\underline\mathtt\colorbox{cyan}{A. Element L}[/tex]

Explanation:

Because the unidentified element has exactly the same Bright-Line Spectra of wavelength in nanometeres as does element L.

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The electron configuration for Helium (He) is shown below.

1s2

Which diagram shows the correct distribution of electrons in the electron shells of a helium atom?

Answers

Answer:

3rd image

Explanation:

Who know the answers for both of these or know were to get them from

Answers

Answer:

kdkekejdjejeneneenendjenejekeke do do do do do do d

Answer:

go ahead bro

[tex]tex]\purple{\rule{45pt}{7pt}}\blue{\rule{45pt}{999999pt}}[/tex]

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[tex]tex]\purple{\rule{45pt}{7pt}}\blue{\rule{45pt}{999999pt}}[/tex]

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Word Equation for Magnesium reacting with Iron Chloride

Answers

Answer:

3Mg+2FeCl3------------3MgCl2+ 3Fe

Some copper is palced in a previouly weighted crucible and reweighed .
Mass of crucible + copper = 5.92g
Mass of crucible = 4.65g
Clculate the mass of copper used in the experiment

Answers

Answer:  1.27g (mass of Copper)

Explanation:

We can find the mass of copper by finding the difference between the mass of the crucible and the copper, and just the crucible. This is possible since the mass that is left would be attributed to just the copper.

Mass of copper = (Mass of crucible + copper) - Mass of crucible

                          = 5.92 g - 4.65 g

                          = 1.27 g

What gas in our atmosphere is thought to have come from plants and algae alone?

Answers

Answer:

Oxegen

Explanation:

All that oxygen has to come from somewhere. You might already know that it comes from photosynthetic organisms like plants.

Please help I will give brainliest ;3

Answers

Answer:

oxygen, carbondioxide

carbondioxide, oxygen

Oxygen, carbon monoxide,Oxygen, carbon monoxide

Sulphuric acid (H2SO4) is titrated against 25.00cm3 of 0.200 mol/dm3 Sodium hydroxide solution (NaOH). It is found that 23.20 cm3 of sulphuric acid is required for neutralization. Calculate the concentration of Sulphuric acid

Answers

My answer,
Approximately 0.108 mol dm^-3

Explanations,
1. Make the balance chemical equation
2. Convert the 25 cm^3 to 0.025 dm^3 by multiplying 25 with 10^-3 (or 25 / 1000)
3. Concentration is equal to = moles of substance over volume of solution
4. Calculate how many number of moles present in 0.025dm^3 of sulphuric acid.

Mole = concentration x volume
^ rearranged from conc = mole/volume

Mole = 0.200 x 0.025 = 0.005 mol

5. Use the balance chemical equation ad mole ratio. In this case,

H2SO4 + 2NaOH —> 2H2O + Na2(SO4)

Thus the ratio between Sulphuric acid and Sodium Hydroxide is 1:2

Hence, the mole of H2SO4 is 0.005/2 = 0.0025 mol

6. Calculate the concentration of the sulphuric acid by using conc. = mole/volume

Hence the answer is 0.0025/(23.20 x 10^-3) = 0.108 mol dm^-3 rounded off at the 3 Sigfigs

I hope u understand sorry for any mistakes done.

What can you say about the reactants of photosynthesis and the products of cellular respiration?​

Answers

Answer:

The reactants of cellular respiration are oxygen and sugar, which are the products of photosynthesis

Explanation:

Carbon tetrachlordie (CCI4) is ___

A. iconic

B. Covalent

Answers

Answer:

b

Explanation:

how many moles are present in 10.0 grams of sodium hydroxide

Answers

Answer:

0.25

Explanation:

no.of moles =10/40

write True If the statement Is Correct And False If Not​

Answers

Answer:

11.false12.true13.true14.false15.true16.false17.false18.false19.true20.false

21.PC22.CC23.PC24.CC25.CC

Explanation:

I think it is helps you

Do all particles pass right through the atoms undeflected?​

Answers

AnswereYs

Explanatioynt:Yes

can anyone tell me "what are the exceptions of law of reciprocal proportions??"​

Answers

The law states that if two different elements combine separately with a fixed mass of a third element, the ratio of the masses in which they combine are either the same or are in simple multiple ratio of the masses in which they combine with each other .

1) What is the most dangerous room in the world? How is it secured?

Answers

Answer:

Radioactive Basement in Chernobyl

"We had to be especially cautious near roads and in the city of Pripyat, there are regular security patrols in those areas. Unfortunately, the legal 'day' tours are not allowed to enter any of the buildings in Pripyat as the structural integrity of some buildings is questionable."

Explanation:

Don't really understand the question

Answers

Answer:

Did they mean those diagrams are the salt or what?

Look at the Recording station detector on the upper left side of the Gizmo. What happens when the seismic waves hit the recording station?

Answers

Answer:

I don’t know what recording station you’re referring to but, When seismic waves reach the seismograph, a graphical record, or seismogram, is produced

Explanation:

The seismic waves hitting the recording station has been resulted in the seismograph, that has been evident of the earthquake.

The seismic wave has been the radiation, with the result of the movement of the earth surface. The movement has been result in the earthquake.

The intensity of the earthquake has been measured by seismograph on the Richter scale. The seismic wave results in the movement of the leads to the production of the seismograph.

The seismic waves hitting the recording station has been resulted in the seismograph, that has been evident of the earthquake.

For more information about earthquake, refer to the link:

https://brainly.com/question/1296104

One of the few resources on Mars is

Answers

Answer:

iron .. titanium.. nickel....aluminum... sulfur... and calcium

When a substance is heated ,the kinetic energy of its molecules

Answers

Answer:

When a substance is heated ,the kinetic energy of its molecules also increase.

Explanation:

K.E is directly proportional to T

How does Bone Marrow Donor Program work?

Name some diseases that can be cured by bone marrow transplant.

What is Donors’ Registry Program?

Answers

noooooooooooooooooooooo

density is 6g/mL and volume is 40 mL what is the mass

Answers

Answer:

240g

Explanation:

Using the equation m=pV, where m=mass, p=density, and V=Volume

m=(6)(40)=240

m=240

balance CHCl3 + O2 = CO2 + H2O + Cl2

Answers

Answer:

2CHCl3 + 5/2 O2 => 2CO2 + H20 + 3Cl2

Explanation:

Left Hand Side(LHS)

We have CHCl3 and O2

Right Hand Side(RHS)

We have CO2, H2O and Cl2

Balancing

To make sure that they have same values, put 2 before CHCl3 giving 2CHCl3 and 3 on Cl2(RHS) for chlorine gas giving 3Cl2

H2O remains the same

Before CO2 put 2 giving 2CO2

To make sure that oxygen is balanced put 5/2 before it. This gives 5/2 O2 (2 cancels out don't worry)

Combining all;

2CHCl3 + 5/2 O2 => 2CO2 + H20 + 3Cl2

I hope this helps. Have a nice studies.

the basic fact that determines molecular shapes is that

Answers

Answer:

The shape of a molecule is mostly determined by repulsion among the pairs of electrons around a central atom.

why does magnesium in an aqueous solution of magnesium chloride conduct electricity but solid magnesium chloride does not?

Answers

Answer:

Delocalized electrons

Explanation:

Magnesium Chloride is an ionic compound, so its lattice structure prevents the flow of electrons. However, when you convert the ionic compound into an aqueous solution it allows movement of electrons/ions due to the breakdown of the molecular forces which make it conductible. In short, Ionic compounds as a solid are not conductible but they are in an aqueous form.

a brief description of atoms and how they relate to
molecules and compounds

Answers

Answer:

Explanation:

Atoms are the thing that make up molecules and compounds. Molecules contain two or more atoms and are held together by covalent bonds

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