3. What is the energy of a photon whose frequency is 5.2 x 1015 Hz? Use the equation: E = hxv
h= 6.626 10-34 J xs
4. What is the frequency of radiation whose wavelength is 2.40 x 105 cm? v=c+X
C= 3 x 108m/s
Answers
Answer:
3. 3.45×10¯¹⁸ J.
4. 1.25×10¹⁵ Hz.
Explanation:
3. Determination of the energy of the photon.
Frequency (v) = 5.2×10¹⁵ Hz
Planck's constant (h) = 6.626×10¯³⁴ Js
Energy (E) =?
The energy of the photon can be obtained by using the following formula:
E = hv
E = 6.626×10¯³⁴ × 5.2×10¹⁵
E = 3.45×10¯¹⁸ J
Thus, the energy of the photon is 3.45×10¯¹⁸ J
4. Determination of the frequency of the radiation.
Wavelength (λ) = 2.4×10¯⁵ cm
Velocity (c) = 3×10⁸ m/s
Frequency (v) =?
Next, we shall convert 2.4×10¯⁵ cm to metre (m). This can be obtained as follow:
100 cm = 1 m
Therefore,
2.4×10¯⁵ cm = 2.4×10¯⁵ cm × 1 m /100 cm
2.4×10¯⁵ cm = 2.4×10¯⁷ m
Thus, 2.4×10¯⁵ cm is equivalent to 2.4×10¯⁷ m
Finally, we shall determine the frequency of the radiation by using the following formula as illustrated below:
Wavelength (λ) = 2.4×10¯⁷ m
Velocity (c) = 3×10⁸ m/s
Frequency (v) =?
v = c / λ
v = 3×10⁸ / 2.4×10¯⁷
v = 1.25×10¹⁵ Hz
Thus, the frequency of the radiation is 1.25×10¹⁵ Hz.
Related Questions
i need help asap plzz first person to answer i will mark brainliest
Diagram 1
What type of air mass was already present A?
What type of air mass is coming in B ?
What type of front is indicated by the purple arrow?
What weather change is occurring because of this front?
Answers
Answer:
it's both cold and hot weather so it could form a tornado
Uranium is an element that is often used in nuclear power plants. Uranium atoms are very large, and the substance can be dangerous if it is not carefully contained
Answers
Answer:
They each have the same number of protons.
Explanation:
Full question: Uranium is an element that is often used in nuclear power plants. Uranium atoms are very large, and the substance can be dangerous if it is not carefully contained. What is true about all uranium atoms?Answer:
They each have the same number of protons
Explanation:
All uranium isotopes have 92 protons in their nucleus. However, they differ in the number of neutrons in the nucleus, hence this also translates to varying mass numbers (which is the sum of neutrons and protons in the nucleus). The most common isotopes of uranium are; U-238, U-235, and U-234
Use the periodic table to identify the number of valence electrons available for bonding for each of the following elements.
Answers
Answer: Edgy, 2020
Explanation: <3
Answer:
refer to picture below :)
Explanation:
2CuO+2NH3------ 3Cu + 3H2O+ N2. Given that the relative molecular mass of copper oxide is 80, what volume of ammonia is required to completely reduce 120 g of Copper oxide? ( Cu=64, O=16, N=14)
Answers
Volume of Ammonia(NH₃) = 22.4 L
Further explanationGiven
Reaction
3CuO+2NH₃⇒ 3Cu + 3H₂O+ N₂
In the problem, the CuO coefficient should be 3 not 2
M CuO = 80
mass CuO = 120 g
Required
The volume of NH₃
Solution
mol CuO :
[tex]\tt mol=\dfrac{mass}{M}\\\\mol=\frac{120}{80}\\\\mol=1.5[/tex]
From the equation, mol ratio CuO : NH₃ = 3 : 2, so mol NH₃=
[tex]\tt \dfrac{2}{3}\times 1.5=1~mol[/tex]
Assume at STP(0 °C, 1 atm) ⇒1 mol = 22.4 L, then volume of NH₃=22.4 L
Which of the following statements explains the difference between a lease and a loan?
a. At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to the
lease company
b. At the end of a loan, the car still belongs to the lease company, but at the end of a lease the car
belongs to you.
c. A loan requires a large down payment at the beginning while a lease does not.
d. A lease requires a large down payment at the beginning while a loan does not.
Please select the best answer from the choices provided
Answers
Answer:
letter A is the answer
Explanation:
At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to the lease company.
Which element has the least density at STP?
Answers
Answer:
Helium, this noble gas has the least density at STP
Explanation:
Which two options are examples of chemical changes? A. A white powder mixed with a clear, colorless liquid makes a solution that is also a clear, colorless liquid. B. When two clear, colorless liquids are mixed together, a white solid forms. O C. A shiny metal bar glows red and expands when heated. D. A white piece of paper turns black and gives off a smell when burned.
Answers
Answer: B. When two clear, colorless liquids are mixed together, a white solid forms.
D. A white piece of paper turns black and gives off a smell when burned.
Explanation:
A. A white powder mixed with a clear, colorless liquid makes a solution that is also a clear, colorless liquid. B. When two clear, colorless liquids are mixed together, a white solid forms. O C. A shiny metal bar glows red and expands when heated. D. A white piece of paper turns black and gives off a smell when burned.
When two clear, colorless liquids are mixed together, a white solid forms. A white piece of paper turns black and gives off a smell when burned. These two options are examples of chemical changes.
What is chemical change ?Chemical change, or, alternatively, chemical breakdown into two or more separate molecules, occurs when one material reacts with another to create a new substance. These processes are referred to as chemical reactions, and they are typically irreversible barring additional chemical reactions.
A chemical transformation is one in which one or more new compounds are created. Chemical reactions are another name for a chemical transformation. Examples include burning any stuff and iron rusting.
Chemical synthesis, or, alternatively, chemical breakdown into two or more separate molecules, occurs when one material reacts with another to create a new substance. These processes are referred to as chemical reactions, and they are typically irreversible barring additional chemical reactions.
Thus, option B and D are correct.
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please please help me i’m so confused! i will give brainleiest answer
{calcium nuclear charge 20+}
{calcium atomic mass 40amu}
1) determine the number of charged particles in the nucleus of calcium atom then deduce the number of electrons
{given the relative charge of a proton =1+\m 1 nucleon = 1amu}
2) determine its mass number A
3) determine the competition of this calcium atom
Answers
Answer:
PLEASE MARK AS BRAINLIEST!!
Explanation:
Calcium has an atomic number of 20 and an atomic mass of 40
The mass number of an isotope is the sum of the number of protons and neutrons in the atomic nucleus. The atomic number is the number of protons. The calcium-40 isotope has a mass number of 40 , and an atomic number of 20 , therefore it has 20 protons.
Gregor Mendel studied the traits of pea plants. Because of his contributions, he is known as the Father of?
Answers
Answer:
A monk, Mendel discovered the basic principles of heredity through experiments in his monastery's garden. His experiments showed that the inheritance of certain traits in pea plants follows particular patterns, subsequently becoming the foundation of modern genetics and leading to the study of heredity.
Explanation:
Answer:
Gregor Mendel (July 20, 1822 - January 6, 1884), is known as the Father of Genetics, is most well-known for his work with breeding and cultivating pea plants, using them to gather data about dominant and recessive genes.
Explanation:
You asked, I answered.
Hope this helped! :)
What coefficient is needed to balance this equation? ____Fe + 4H2O --> Fe6O4 + 4 H2 *
Answers
Answer:
the answer is 1
the coefficient needed to balance this equation is 1
Explanation:
Define the term "Potential Energy" in your OWN WORDS.
Answers
hope this can help you
you can search on google some stuff like your question
Ublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage. For those of us interested in the water cycle, sublimation is most often used to describe the process of snow and ice changing into water vapor in the air without first melting into water
Answers
Answer:
True
Explanation:
Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage.
For those of us interested in the water cycle, sublimation is most often used to describe the process of snow and ice changing into water vapor in the air without first melting into water which bypasses the conversion to liquid stage and goes straight to the gaseous form.
23. Soluble salts can be prepared using
the following methods except by
A. action of dilute acids on
metals.
B. action of dilute acid on an
insoluble base.
C. direct combination of
constituent elements.
D. neutralization reactions.
E. precipitation from solutions,
help ple*zzzz*zzz*
Answers
Answer:
I think crystallization is a write answer for this question
Explanation:
but according to this (E is the write answer)
Need help!!! Don’t understand
Answers
To begin with...
The bond between carbon and oxygen is suppose to have 3 bonds in between
Second:
The lone pairs are not drawn. Since carbon monoxide has 3 bonds in between it should have a lone pair (2 dots) left over on each atom.
Reminder: in order to satisfy the octet rule EACH atom must have 8 electrons. Carbon has 4 valence shell electrons and oxygen has 6. In order to satisfy this rule, there should be 3 bonds in between which makes a total of 6 for each atom plus the lone pairs that make up the 8.
I hope that’s not too confusing, if you still have any questions please let me know in the comments (:
The solubility of ZnCO3 in water is quite low. What could you add to increase the solubility? Explain fully how your method would work.
Answers
There is a way to decrease the concentration of an ion here. The carbonate ion happens to be easy to decrease. All we have to do is add some acid (say HCl) to the container. The following sequence of reactions explains how this WO r ks.
As long as more acid is added, this process will continue until all the solid Zn CO3 has been dissolved
Which of the following are common decomposers? (Select all that apply) fungi, ferns, bacteria, viruses, grasses
Answers
Answer:
Fungi, bacteria, ferns,
Explanation:
bacteria Fungi Ferns are important. decomposers,
I hope it helps you.
There are basically four different categories of decomposers: fungi, insects, earthworms, and bacteria. Fungi, ferns and bacteria are common decomposers.
What are decomposers ?Decomposers are organisms that disintegrate rotting or dead species; they carry out decomposition, a process only some kingdoms, like fungi, are capable of.
The primary decomposers in nature are fungi, which destroy organic material that would otherwise not be recycled.
Scavengers and decomposers are the two different categories of decomposers. Animals called scavengers hunt down dead plants or animals and consume them. They cut them into small pieces when they eat them.
Each contributes to the food recycling process differently. To transform dead plants or animals into simple substances, fungi release compounds. Some of these elements are absorbed by them for growth, while others go into the soil.
Thus, Fungi, ferns and bacteria are common decomposers.
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The item that is not normally used in preparing
a slide is
A. medicine dropper
B. scissors
C. slip cover
D vereis
Answers
Answer:
What is the name of the lab tool that is used to transfer a sample to a microscope slide?
A-a dropper
B-forceps
C-scissors
D-a ruler
Explanation:
got it wrong but this is the answer edg 2021
In the preparation of a microscopic slide, the items which are used are medicine dropper, scissors, and a slip cover. Thus, the correct option is D.
What is a microscopic slide?Microscope slides are made for the purpose of observations of different objects. After the observation, the slides are discarded. In most cases, the slides use a liquid mounting medium such as water or glycerin.
The procedure for the preparation of the slide is as follows:
1. Place a drop of liquid mounting medium in the center of the slide.
2. Position the sample on liquid with the use of tweezers.
3. At an angle, place one side of the cover slip against the microscopic slide making contact with outer edge of the liquid drop.
4. Lower the cover slip slowly, avoiding air bubbles.
5. Remove the excess water present in it with the help of paper towel.
Therefore, the correct option is D.
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Which of the following chemical formulas contains the most molecules?
A. 5CO
B. 3H2O
C. 2Fe2O3
D. 4C3H8
Answers
PLZ HELP ASAP THIS IS DUE LIKE RIGHT NOW
Answers
Answer:it's either the first or second one
Explanation:
the layers of the earth
Apple juice can be classified as which of the following?
O A compound
An Element
O A mixture
O A pure substance
Answers
Answer:
mixture
Explanation:
Answer:
Mixture
Explanation:
Each organ system has specific functions for the body's survival. Which body system is responsible for carrying oxygen from the lungs to the body cells and transporting glucose for energy?
Group of answer choices
Answers
Answer:
Circulatory System
Explanation:
Blood carries oxygen to the rest of the body, as well as glucose.
How many elements are artificially made?
Answers
Answer:
May be 119 elements are artificially made.
Answer:
119 elements are artificially made...
How many rings/energy levels would the Bohe model for an element
have if it had 12 electrons?
PLEASE HELP
Answers
SOMEONE HELP ME PLEASE I’LL GIVE BRAINLY
Answers
Answer:
i think that describes cohesion or hydrolysis
Explanation:
manganese atom has 30 neutrons and atomic number 25
determine the electron cloud charge of manganese
Answers
Answer:
25
Explantion:
atomic no. = no. of eletron
SOMEONE PLEASE HELP ME! provide explanations please
Answers
Answer:
hope this document helps! it's kinda hard to type out the explanation but ill try
Explanation:
divide the percenatge by the molar mass of the element.
(do this for both elements) \
find the lowest number and divide the results with it
now you have your empirical formula (with the rounded answers)
then find the molar mass of your empirical formula
divide the number given (267) by the molar mass to get a rounded number.
multiply that rounded answer to your empirical formula to get your empirical formula. :)
which equation represents the process of cellular respiration?
Answers
Answer:
C 6 H 12 O 6 + 6 O 2 --> 6 CO 2 + 6 H 2 O + ATP is the complete balanced chemical formula for cellular respiration.
Answer:
C6H12O6 + 6O2 -> 6CO2 + 6H2O + 38ATP
Explanation:
glucose + oxygen gas -> carbon dioxide + water + ATP
Can someone please help me with this???
Answers
Answer:
1)
Hg
80 protons, 80 electrons, 121 neutrons
2)
Mo
42 protons, 42 electrons, 54 neutrons
3)
Symbol is Cu, Mass is 64, 29 Protons
4)
C
Atomic number is 6, 6 protons, 6 electrons, 6 neutrons
5)
Symbol is P, 15 protons, 15 electrons, 16 neutrons
6)
Pb
Atomic number is 82, 82 electrons, 125 neutrons
7)
Na
Mass is 23, 11 protons, 11 electrons.
Hopefully this helps!
PLEASE HELP! ITS URGENT! I GIVE BRAINLY
Using the Law of Conservation of Matter, determine the number of grams of iron sulfide (FeS) that will be produced in this reaction.112g Fe + 64g S → _____ g FeS *
a. 48g
b. 64g
c. 112g
d. 176g
Answers
Answer:
Its C
Explanation:
If you think about it logically all the other answers don't make sense A and B are to small of a number And D is to Big of a number
Hope this Helps!!
In any chemical process, the matter is neither lost nor gained. *
reaction
conservation of matter
covalent bonds
physical change
Answers
In any chemical process, the matter is neither lost nor gained according to conservation of matter. Therefore, the correct option is option B.
What is matter?Matter is any material that has weight and occupies space by having volume in classical physics as well as general chemistry. All common items that can be felt are ultimately constituted of atoms, which are composed of colliding subatomic particles, therefore "matter" typically comprises atoms and everything made up of them, as well as any particles that act as if they both rest weight and volume.
It does not, however, contain massless particles like photons or even other energy phenomena and waves like light or heat. There are numerous states of matter (also known as phases). In any chemical process, the matter is neither lost nor gained according to conservation of matter.
Therefore, the correct option is option B.
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