1. Calculate the frequency and the energy of light that has a wavelength of 568 cm
2. Calculate the frequency and the energy of light that has a wavelength of 726 cm
3. Calculate the frequency and the energy of light that has a wavelength of 482 cm
4. Calculate the frequency and the energy of light that has a wavelength of 879 cm
5. Calculate the frequency and the energy of light that has a wavelength of 167 cm
6. Calculate the frequency and the energy of light that has a wavelength of 572 cm
Answers
Answer:
Please find the answers to the frequency and energy to each question below
Explanation:
Using the formulas;
λ = v/f
E = hf
Where;
λ = wavelength (metres)
v = speed of light (2.998 × 10^8 m/s)
f = frequency (Hz)
E = Energy of photon (J)
h = Plancks constant (6.63 × 10^-34 J.s)
1.) λ = 568cm = 5.68m
f = v/λ
f = 2.998 × 10^8 ÷ 5.68
f = 0.5278 × 10^8
f = 5.278 × 10^7 Hz
E = hf
E = 6.63 × 10^-34 × 5.278 × 10^7
E = 34.99 × 10^(-34+7)
E = 3.499 × 10^-26 J
2). λ = 726cm = 7.26m
f = v/λ
f = 2.998 × 10^8 ÷ 7.26
f = 0.413 × 10^8
f = 4.13 × 10^7 Hz
E = hf
E = 6.63 × 10^-34 × 4.13 × 10^7
E = 27.38 × 10^(-34+7)
E = 2.74 × 10^-26 J
3). λ = 482cm = 4.82m
f = v/λ
f = 2.998 × 10^8 ÷ 4.82
f = 0.622 × 10^8
f = 6.22 × 10^7 Hz
E = hf
E = 6.63 × 10^-34 × 6.22 × 10^7
E = 41.24 × 10^(-34+7)
E = 4.124 × 10^-26 J
4). λ = 879cm = 8.79m
f = v/λ
f = 2.998 × 10^8 ÷ 8.79
f = 0.341 × 10^8
f = 3.41 × 10^7 Hz
E = hf
E = 6.63 × 10^-34 × 3.41 × 10^7
E = 22.61 × 10^(-34+7)
E = 2.26 × 10^-26 J
5). λ = 167cm = 1.67m
f = v/λ
f = 2.998 × 10^8 ÷ 1.67
f = 1.795 × 10^8
f = 1.795 × 10^8 Hz
E = hf
E = 6.63 × 10^-34 × 1.795 × 10^8
E = 11.9 × 10^(-34+8)
E = 1.19 × 10^-25 J
6). λ = 572cm = 5.72m
f = v/λ
f = 2.998 × 10^8 ÷ 5.72
f = 0.524 × 10^8
f = 5.24 × 10^7 Hz
E = hf
E = 6.63 × 10^-34 × 5.24 × 10^7
E = 34.74 × 10^(-34+7)
E = 3.474 × 10^-26 J
Related Questions
10. What is the density of a rock with a volume of 5 cubic centimeters and a mass of 3 grams?
Answers
Answer:
0.6 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{3}{5} \\ [/tex]
We have the final answer as
0.6 g/cm³Hope this helps you
Which has the larger radius, F or F− ?
A. They have the same radius.
B. F
C. F−
D. It is impossible to tell.
Answers
Answer is B- F has a smaller radius than F− because an additional electron causes greater repulsion in F− is the correct choice and the nuclear charge the radius of the anion increases.
Explanation: I hoped that helped!
The one that have larger radius is F-. The correct option is C.
What is atomic radius?A chemical element's atomic radius is a measurement of the size of its atom, usually the mean or typical distance from the nucleus's center to the outermost isolated electron.
Because a boundary is not a well-defined physical entity, various non-equivalent definitions of atomic radius exist.
As the number of energy levels decreases down a group, the distance between the nucleus and the outermost orbital increases.
As a result, the atomic radius expands. The ionic radius is the distance between the nucleus and the ion's electron cloud's outer edge.
Because they have fewer shells, F and F- are both smaller than the rest. F- now has one more electron than F, causing the radius to increase.
Thus, the correct option is C.
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In the reaction 2H2O (l) + 2Cl– (aq) → H2 (g) + Cl2 (g) + 2OH– (aq), which substance is oxidized?
A. H2O
B. Cl
C. H
D. OH
E. None of the Above (This is not a redox reaction.)
Answers
Answer:
c
Explanation:
because i asked alexa and it told me hehr
what is the ratio of mass of 0.7moles of nitrogen gas to 11.2liters of oxigen gas at STP?
Answers
Answer:
if a 40.0-gram sample of the gas occupies 11.2 liters of space at STP? A balloon is filled with 5 moles of helium gas.
Explanation:
Which statement best explains why the atmosphere is considered an open system?
Answers
Answer:
The answer is A
Explanation:
Trial and error :P
Answer: The answer is B. Energy and matter can enter and leave.
Explanation:
Viruses
are multicellular organisms
cannot survive outside a host
are part of the Protista kingdom
are not considered living because they do not reproduce
Answers
Answer:
just see it it will help trust me its my school work
Explanation:
Answer:
C are part of the Protista kingdom
Explanation:
The Protista, or Protoctista, are a kingdom of simple eukaryotic organisms, usually composed of a single cell or a colony of similar cells. Protists live in water, in moist terrestrial habitats, and as parasites and other symbionts in the bodies of multicellular eukaroytes.
Other eukaryotic kingdoms—the Plantae, Fungi, and Animalia—are each believed to be monophyletic . That is, all plants evolved from one ancestral plant, all animals from one ancestral animal, and all fungi from one ancestral fungus. The Protista, however, are not; they are almost certainly polyphyletic and did not arise from a single ancestral protist. Rather, the Protista are a category of miscellaneous eukaryotes, not closely related to each other and not sharing many characteristics, but not fitting any other kingdom of life. Some authorities divide the Protista into as many as twenty-seven phyla, and some feel the Protista should be discarded as a kingdom name, and these organisms divided into as many as twelve kingdoms.
Historically, the Protista were divided into three main categories: the plantlike algae, animal-like protozoans, and funguslike slime molds. This classification persists in many elementary textbooks; however, current molecular evidence indicates that these are not natural groups related by common descent, but groups with merely superficial , deceptive similarities.
Classifying them together is probably no more scientific than it would be to classify bees, birds, and bats in one group simply because they all have wings and fly. The two flagellated protozoan groups called trypanosomes and dinoflagellates, for example, are probably less related to each other than a human is to a fish. Genetic evidence (base sequences in their mitochondrial deoxyribonucleic acid [mtDNA] and ribosomal ribonucleic acid [rRNA]) now indicates that the following are more natural (evolutionarily related) groups of Protista.
These are the most primitive protists. Some lack mitochondria and suggest what the first eukaryotes may have been like, while others have primitive mitochondria that closely resemble bacteria. Some basal Protista without mitochondria are Trichomonas, a vaginal parasite of humans; Giardia, an intestinal parasite; and Entamoeba, the cause of amoebic dysentery. The lack of mitochondria is not necessarily the primitive (original) condition of all these protists, however. Although Giardia lacks mitochondria, it does have mitochondrial genes. Apparently it once had mitochondria, and these genes transferred to its nuclear DNA before the mitochondria were lost.
Basal Protista with mitochondria include Trypanosoma, a genus of blood parasites that cause African sleeping sickness and other diseases; Euglena, a green freshwater flagellated protozoan with chloroplasts; and Physarum, a common terrestrial slime mold.
pls give brainiest my hand hurts ;-:
Hello can someone help me out i will give brainliest. Chemical or physical change hw
Answers
Answer:
20 and 24 are chemical the rest are physical
Answer:
1. Fireworks: chemical,
2. Hair: physical
3. glow sticks: chemical
4.Baseball: physical
5.Popcorn: chemical
Explanation:
1. bc there are chemicals/powders
2. the hair is still hair, even if it is cut
3. You are combining chemicals, this cannot be un-done
4. The shards are still glass, they do not turn into another substance other than glass
5. You heated the popcorn, it "exploded", this cannot be undone
help meeeee brainliest for whoever helps
Answers
Answer:
no
Explanation:
Answer:
All A's
Explanation:
it might sound sus but it all a's
how can you tell if a chemical is an ionic bond?
Answers
If a compound is made from a metal and a non-metal, its bonding will be ionic.
If a compound is made from two non-metals, its bonding will be covalent.
how many moles of N2O5 are produces by reacting 10 moles of O2?
Answers
Answer:
4 moles of N₂O₅
Explanation:
Given parameters:
Number of moles of O₂ = 10moles
Unknown:
Number of moles of N₂O₅ produced = ?
Solution:
To solve this problem, we must write the reaction equation first,
2N₂ + 5O₂ → 2N₂O₅
IN the reaction above;
5 moles of O₂ will produce 2 moles of N₂O₅;
10 mole of O₂ will produce [tex]\frac{10 x 2}{5}[/tex] = 4 moles of N₂O₅
Sodium is a non-metal
A. True
B. False
Answers
Answer:
false
Explanation:
...................
its a metal
Multimeters are used to test the conductivity of a substance. What is most likely the identity of the liquid?
Answers
Answer:
The purpose of this lab is to determine the identity of an unknown liquid by measuring its density, melting point, boiling point, and solubility in both water and alcohol, and then comparing the results to the values for the known substance. Hope this helps!! :)
An element has three naturally occuring isotopes: 90.48% is element-20 (mass = 19.992 amu), 0.27% is element-21 (mass - 20.994 amu), and the remainder is element-22 (mass = 21.991 amu). Calculate the average atomic mass of the element, rounded to three decimal places.
Answers
Answer:
Average atomic mass = 20.180 amu.
Explanation:
Given data:
Abundance of X-20 = 90.48%
Atomic mass of X-20 = 19.992 amu
Abundance of X-21 = 0.27%
Atomic mass of X-21 = 20.994 amu
Abundance of X-22 = 9.25%
Atomic mass of X-22 = 21.991 amu
Average atomic mass = ?
Solution:
Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) +(abundance of 3rd isotope × its atomic mass) / 100
Average atomic mass = ( 90.48×19.992)+(0.27×20.994)+(9.25+ 21.991 ) /100
Average atomic mass = 1808.88 + 5.668+203.42 / 100
Average atomic mass = 2017.968 / 100
Average atomic mass = 20.180 amu.
Which of the processes below is a way scientists can accelerate the process
of traditional crossbreeding through inserting beneficial traits in the DNA of a
plant?
Answers
Answer:
Genetic Engineering
Explanation:
AP3X
Collisions between reactant molecules lead to a reaction when the molecules have the correct orientation and
enough kinetic energy
Answers
Question:
A. Does this picture show a physical or chemical change? How do you know?
B. Does this picture show a physical or chemical change? How do you know?
Answers
Answer:
A. Chemical
B. physical
Explanation:
Elements in the same column down belong to the same
Answers
Answer:
same what
Explanation:
What is the valency of aluminum in aluminum chloride?
A. 1
B.2
C.3
D.4
Answers
Answer:
C.3
13AL
2.8.3
The number of electrons from the outermost shell is the valence of the element.
Which is the correct orbital diagram for carbon?
ОА.
1s
2s
2p
OB.
1s
2s
2p
112 1
2p
Ос.
1s
2s
OD.
1s
2s
2p
11
Answers
Hope this helps!! (:
The modern periodic table consists of the elements which are arranged in the increasing order of their atomic numbers. The element 'C' belongs to 14th group of the periodic table. The correct option is A.
What is orbital diagram?The orbital diagrams are the pictorial representation of the electrons in an atom. The orbital diagrams are mainly based on the Auf Bau principle, Pauli's exclusion principle and Hund's rule of maximum multiplicity.
According to Auf Bau principle, the electrons are arranged in the orbitals in the increasing order of their energies. The pauli's exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.
The hund's rule states that the unpaired electrons in the orbitals have parallel spins. The atomic number of 'C' is 6, and its electronic configuration is 1s²2s²2p².
Thus the correct option is A.
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Geologic evidence shows that Earth's tectonic plates can move thousands of kilometers across the Earth's surface. These movements
Answers
Answer: ok so you have to do is 2+11
Explanation:
Answer:
occur gradually over millions of years.
Who uses Ionic compounds?
Answers
Hope this helps!!! :))
An object has a fixed volume and shape before it changes state. After the
change, it still has a fixed volume but can now change in shape. Which
change of state has occurred?
A. Gas to liquid
B. Solid to liquid
O C. Liquid to gas
D. Gas to plasma
Answers
Based on the diagram what season would be in Florida?
A) summer
B) winter
C) spring
D) fall
Answers
Answer: B. Winter
Explanation: The southern hemisphere is leaning towards the sun meaning that that hemisphere is closer to the sun therefore it is summer and spring. With the northern hemisphere and north america leaning away from the sun, it is farther away meaning it is winter.
How many moles is 573.28 g of AgCl?
A. 3 mol
B. 5 mol
C. 4 mol
D. 2 mol
Answers
Answer:
4 MolExplanation:
Just divide the mass of how much AgCl by the mass per mole to give you the number of moles, 573.28g 143.318gmol−1 AgCl = 4.00molAgCl
Hope this helps! <3
Which percentage represents the amount of Earth's water that is found in oceans?
A 3%
B. 71%
C.97%
Answers
Round 23.455 cm into 4 significant figures:
cm
Answers
i did this in chem so this should be right
HELP ASAP DUE TODAY
Answers
Answer:
4. c) Lose only 3 electrons
5. d) Nitrogen.
Your answers are correct
which has the highest density, water at 0c, water at 4c, water at 6c, water at 8c
Answers
Answer:
water at 0C
Explanation:
The colder the water is, the denser it is, so the water here with the lowest temperature, is 0C
is steam a covalent compound or a metallic compound?
Answers
Answer:
Steam is a covalent compound.
Explanation:
beacause metallic compound is a compound that contains one or more metal elements bonded to another element. And steam is the invisible vapor into which water is converted when heated to the boiling point.
what are the main method of combination of elements ?
Answers
Answer: Element can be chemically combined into compound, therefore, a compound consist of two or more elements combined, in definite proportions, by chemical means. Compounds may be formed by combining Adams of their constituent elements by ionic bonds or by covalent bonds.
Explanation: