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September 2, 2014

Search: Science-Bohr Model 2

Number of results: 27,000

Physical Science
Please use the Bohr model simulator at Michigan State University to complete the table below: initial orbital ending orbital Wavelength (nm) 3 2 4 2 2 434 2 410.2 7 2 397 4 3 5 3 Bohr Model Simulation McGraw-Hill (Java)
June 10, 2010 by renea

Chemistry
The Bohr model stops representing correct atomic structure when? Why? What does this mean for remaining atoms? How does Bohr's model relates to the periodic table?
October 19, 2010 by Katie

science
in an atom electrons move in definite orbits around the nucleus much like planets cirlce the sun. who said this - I think Bohr choices are: Bohr rutherford wave model Thompson democritius
November 2, 2007 by sam

physics
please someone give me a hand at this problem. . . Describe the Bohr model of the atom. What is Bohrís key idea (involving matter waves) that makes the Bohr atom have discrete energy levels?
November 10, 2007 by Veronica

science
explain how the path of an electron differs in Bohr's model and in the modern model of the atom
December 18, 2009 by spooky

phyical science
explain how the path of an electron differs in bohr's model and in the modern model of the atom
October 15, 2008 by taylor

Physical Science
Explain how the path of an electron differs in Bohr's model and in the modern model of the atom.
November 29, 2008 by Janisha

phsyical science
explain how the path of an electron differs in Bohr's model and in the modern model of the atom
December 12, 2010 by darmisha

science
an atom is the smallest piece of matter which model does this describe Democrtius dalton Rutherford Thompson Bohr Wave Model
November 2, 2007 by sam

chemistry
1. what do the spectral lines represent in the bohr atomic model? 2. What do the black spaces represent in the Bohr atomic model?
March 18, 2008 by jojo

physics
1.Distinguish between atomic physics and nuclear physics? 2.Briefly describe the Bohr model of the atom. What is Bohrís key idea (involving matter waves) that makes the Bohr atom have discrete energy levels? I really didnt understand what they were wanting, so many of ...
November 6, 2007 by Will

Physics
Describe the Bohr model of the atom. What is de Broglie's key idea (involving matter waves) that makes the Bohr atom have discrete energy levels?
November 16, 2009 by Lauren

Chemistry
What the difference between an orbit in the Bohr model and an orbital in the quantum mechanical model of the atom?
October 8, 2007 by Matthew

Physics
Could someone help me with these questions. . . please 1. How does Rutherfordís model of the atom account for the back Ė scattering of alpha particles directed at the gold leaf 2. The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. ...
November 12, 2007 by Mike

physical science
compare the postions of the electrons in Bohr's model of the atom with their positions according to modern atomic theory
October 15, 2008 by taylor

Physics
Can you please help me with the following questions. Thanks! How does Rutherford's model of the atom acoount for the back-scattering of alpha particles directed at the gold leaf? What is Bohr's key idea (involving matter waves) that makes the Bohr atom have discrete engergy ...
November 5, 2007 by Soly

science
How did Rutherford, bohr, and quantum geiger-marden metail-foil experiments contradict thomas's raisin pudding model of the atom?
November 8, 2013 by Grace Peterson

physics
Explain what ideas led Bohr to suggest a new atomic model; and state Bohr postulates. Explain also, in words, what the correspondence principle is in atomic physics.
April 19, 2011 by qwer

chemistry
1) what flaws exsit in Dalton's model of the atom? 2) what flaws exist in Thompson's plum pudding model of the atom? 3) what flaws exist in Rutherford's model of the atom? 4) what flaws in Bohr's model of the atom? 5) do any flaws exist in the modern quantum model of the atom...
November 14, 2007 by Anonymous

chemistry 11
explain the process of a bohr model
December 3, 2009 by terrance

CHEMISTRY
PLEASE HELP I REALLY DO NOT UNDERSTAND THIS YOU DONT REALLY HAVE TO ANSWER THE QUESTIONS BUT AT LEAST JSUT A LITTLE HINT THATS ALL PLEASE AND I HAVE A QUIZ ON THIS TOMORROW MY TEACHER REALLY CANNOT TEACH 1) what flaws exsit in Dalton's model of the atom? 2) what flaws exist in...
November 14, 2007 by Anonymous

physical science
compare the positions of the electrons in bohr's model of the atom with their positions according to modern atomic theory. state the importance of valece electrons in the organization of the periodic table
June 18, 2007 by rodney

science
an atom is made of a positively charged nucleus surrounded by a large region in whci hscientists can predict where an electron is likey to be found. I think this is attributed to rutherford choices are: rutherford, wave model, thompson, dalton or bohr.
November 2, 2007 by sam

Science-Bohr Model 2
compare the # of empty spaces in the outer shell of the non-metals with the ion charges. whats the relationship? I dont get this question, can someone please explain. What empty spaces is it referring to ?
April 13, 2010 by Sara

science
I choose these 3 as dalton atoms of same element are exactly alike atoms are invinsible atoms are smallest piece of matter choices were dalton rutherfird wave model bohr democritius
November 2, 2007 by sam

Physics
Using the Bohr model of hydrogen, find the linear momentum, when n=3.
May 14, 2011 by Cerra

Physics
Who originally designed the planetary model of an atom? Bohr or Rutherford
December 17, 2012 by Katie

science
Are these correct for Democritius Help so confused - I read site and still trying to figure out. atoms of same element are exactly alike an atom is mostly empty space with a dense - postiveily chareged nucleus These are the choices Rutherford wave model dalton Bohr democritus
November 2, 2007 by sam

Science-Bohr Model 2
how many shells r needed 4 the elements in each of the 1st rows of the periodic table. Im kind of getting confused. When it says rows; does it refer to groups or no? I referred rows to the groups for my last question and came up with a pattern, but now I'm unsure of of myself.
April 13, 2010 by Sara

physics help!
Using the Bohr model, estimate the wavelength Ž of the KŠ characteristic X-ray for a metal an atom of which contains Z = 50 protons.
April 22, 2012 by jason

physics
Using the Bohr model, estimate the wavelength Ž of the KŠ characteristic X-ray for a metal an atom of which contains Z = 50 protons.
April 22, 2012 by jason

Physics please help!
Using the Bohr model, estimate the wavelength Ž of the KŠ characteristic X-ray for a metal an atom of which contains Z = 50 protons.
April 22, 2012 by linds

Chemistry
electromagnetic radiation of which frequency (in Hz) can be emitted by the hydrogen atom upon transition of an electron from n= 6 to n= 2 according to the bohr model.
May 8, 2012 by Winston

Science-Bohr Model 2
For the metal elements, whats the connection between the ion charge and the # of electrons in the outershell? I wrote: The ion charge is positive for all metal elements and the electron # increases. please add any other info, thanks
April 13, 2010 by Sara

11th grade
According to Bohr model, what determines the color of light emitted when an electron moved from one energy level to another?
August 25, 2010 by christina

Physics
Q: From the Bohr model of the Hydrogen atom, calculate the minimum amount of energy (in eV) an electron in the lowest orbital would need to free it from its proton (i.e., to ionize the atom). A: would I use the equation: En = - 13.6 / (n^2) ? If so, an an electron in its ...
May 26, 2009 by Tracey

chemistry
According to the Bohr model of the hydrogen atom, how is hydrogen's bright line spectrum produced?
October 27, 2009 by ryan

Science-Bohr Model 2
is there a pattern betweent he # of electrons in the outers shell of an element and its position along the row in the Perioidic table. whats the pattern? I know that there is a pattern, but I'm unable to explain. I looked at the first group of elements which included Hydrogen...
April 13, 2010 by Sara

PHYSICS
In the Bohr model of the hydrogen atom, the electron makes 6.00◊10^15 rev/sec around the nucleus.What is the average current at a point on the orbit of the electron?
April 11, 2011 by Mattie

physics
In the Bohr model of the atom, the ground-state electron in hydrogen has an orbital speed of 2190 km/s.The mass of an electron is 9.11◊10−31kg. What is its kinetic energy?
May 2, 2014 by Anonymous

Political Science
Is the rational-comprehensive model or the incremental model best used to describe policymaking in the United States? Provide examples to support your model choice
February 18, 2012 by unknown

mojo
A hydrogen atom is in its elevnth excited state, n = 12. Using the Bohr model of hydrogen, find the linear momentum. You want to solve for the electron velocity and multiply that by the electrn mass. There are many ways to do this. One would be to get the radius of the orbit ...
August 20, 2007 by physics

CHEMISTRY
6. The H atom and the Be3+ ion each have one electron. Does the Bohr model predict their spectra accurately? Would you expect their line spectra to be identical? Explain.
February 9, 2014 by Sajeth

11th grade
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.17 x 10^6 m/s. find the central force acting on the electron as it revolves in a circular orbit of radius 5.42 x 10^-11m.
December 5, 2010 by Julia

Chemistry
3. Using Bohrís model of the atom, calculate the energy required to move an electron from a ground state of n = 2 to an excited state of n = 3. Express your answer in both J/photon and kJ/mol.
April 23, 2013 by Brad

Physical Science
I need some help. I have tried working this problem and can't get it. A class is building a scale model of the planets based on the model of Mercury having a radius 0.5cm. What is the diameter of Saturn for this model?
April 8, 2012 by mel

science
describe the difference between a ball-and-stck model and a space-filling model of a compound ? Vanessa--Have you seen a ball-and-stick model and a space-filling model? If so you will know how to answer this. dont give me stupid answers i can on for help not bs
March 4, 2007 by vanessa

physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 ◊ 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 ◊ 10−11 m. Answer in units of N.
May 11, 2011 by go

physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 ◊ 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 ◊ 10−11 m. Answer in units of N.
May 11, 2011 by go

physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 ◊ 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 ◊ 10−11 m. Answer in units of N.
May 11, 2011 by go

physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 ◊ 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 ◊ 10−11 m. Answer in units of N.
May 11, 2011 by go

Physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.1 ◊ 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.51 ◊ 10−11 m. Answer in units of N
October 29, 2013 by Kate

Physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.45 ◊ 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 5.18 ◊ 10−11 m. Answer in units of N
June 22, 2014 by Kaylee

Chemistry Help!!!!
for each of the following pairs of elements, give the correct molecular formula, explain how you arrived at this answer( you may use the Bohr model notation, or the orbital model notation, or explain linguistically) and note whether the bonding is covalent or ionic. ( I tried ...
March 26, 2012 by John

Science
Why is the Bohr Theory incompatible with the uncertainty principle?
October 9, 2011 by Sheryl

science
Why is the Bohr Theory incompatible with the uncertainty principle?
October 9, 2011 by Sheryl

Algebra 1
An architectural firm makes a model of a science center they are building. The ratio of the model to the actual size is 1 in.:85 ft. Estimate the height of the building if the model is 1.5 inches tall.
October 5, 2013 by Katie

Physics/electricity
In the Bohr model of the hydrogen atom, an electron in the 2nd excited state moves at a speed of 5.48X10^5 m/s in a circular path having a radius of 2.12X10^-10 m. What is the effective current associated with this orbiting electron?
October 6, 2013 by Derrick

Science
how do you draw a bohr diagram of a atom and a ion and how are they different????
February 12, 2014 by Mariah

Physic please check
Consider two different hydrogen atoms. The electron in each atom is in an excited state. (a) Is it possible for the electrons to have different energies but the same orbital angular momentum L, according to the Bohr model? Justify. No.Electrons within the same obital angular ...
December 14, 2007 by Mary

Science
need info about Niels Bohr's quantum theory????????
May 27, 2008 by Sam

Chemistry
According to the Bohr model, what determines the color of light emitted when an electron moves from one energy level to another? The wavelength of the photon emitted depends on the difference of the two levels the electron moved from/to.
December 7, 2006 by Tomaya

Chemistry
Calculate the energy (in kJ/mol) required to remove the electron in the ground state for each of the following one-electron species using the Bohr model. (a) He+ kJ/mol (b) Li2+ kJ/mol
January 24, 2012 by Sarah

Chemistry
Calculate the energy (in kJ/mol) required to remove the electron in the ground state for each of the following one-electron species using the Bohr model. (a) He+ kJ/mol (b) Li2+ kJ/mol
January 24, 2012 by Sarah

Physical Science
I need some help. I have tried working this problem and can't get it. A scale model of the solar system is being constructed where 40cm of the model represents 0.5 AU of actual distance. What is the model dimension, in meters, for the distance of Jupiter from the sun?
April 8, 2012 by mel

physics
) A hydrogen atom has its electron in the n = 5 level. The radius of the electron's orbit in the Bohr model is 1.323 nm. Find the de Broglie wavelength of the electron under these circumstances. What is the momentum, mv, of the electron in its orbit?
April 22, 2014 by Anonymous

physics
(a) A hydrogen atom has its electron in the n = 5 level. The radius of the electron's orbit in the Bohr model is 1.323 nm. Find the de Broglie wavelength of the electron under these circumstances. (b) What is the momentum, mv, of the electron in its orbit?
April 23, 2014 by jake

Science
1. How is a model of an atom different from a real atom? A. A model of an atom is not as big as an actual atom. B. A model of an atom is the same as a real atom. C. A model of an atom is more complex than a real atom. D. A model of an atom is not as small as an actual atom. I ...
August 26, 2014 by Amber

physical science
Which one of these statements is true about Copernicus? a. His model included planetary orbits that were circular. b. He believed that Ptolemy's ideas about the shape of orbits were correct c. His model could not account for retrograde motion of Mars. d. His model of the ...
December 15, 2011 by Fonda

8th grade science :(
How are the Heliocentric Model and the Geocentric Model Similar? List as many ways as you can.
December 9, 2013 by Ira

science
i have to make a model on global warming(a 3d model)can u plzz...give some ideas.
June 13, 2008 by shweta

Science
What was the main difference between Dalton's model of the atom and the model that was first developed by the Greeks?
March 14, 2013 by Kim

physics
In Bohr's model of the hydrogen atom, the radius of an orbit a. is proportional to n2. b. is smallest for the highest energy state. c. increases when a photon of light is emitted from an excited atom. d. can have any value that is larger than the ground-state radius. e. none ...
August 15, 2009 by jeff

Science please help
Draw Bohr diagrams of a magnesium atom bonding with fluorine atoms. Draw atoms then electron transfer and finally the ions that form. What type of bonding occurs? Draw Bohr diagrams of 2 hyrdogen atoms bonding with an oxygen atom by sharing electrons to form a water molecule. ...
March 3, 2014 by Anonymous

physical science
How would you know if a model is a good model?
October 13, 2013 by Tia

atoms
If i was to draw a diagram of a hydrogenatom with one electron and its many spectral lines would i need to draw the BOhr model with the nucleus in the middle and 3 outer rings or have i lost the plot That is one way. Actually, there are an infinite number of stable orbits that...
February 14, 2007 by bex

Chemistry
What is the empirical distinction between emission and absorption spectra? In general terms, how did Niels Bohr explain each of these spectra? In general terms, emission spectra are obtained when the electron is at a high energy level and it falls to a lower energy level. In ...
February 7, 2007 by Raj

Physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.41 ◊ 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 5.15 ◊ 10−11 m. Answer in units of N. Find the centripetal acceleration of the ...
May 5, 2009 by Amanda

Physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.41 ◊ 10^6 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 5.15 ◊ 10^−11 m. Answer in units of N. Find the centripetal acceleration of the ...
May 9, 2009 by Amanda

Physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.31 ◊ 106 m/s.Find the central force acting on the electron as it revolves in a circular orbit of radius 4.95 ◊ 10−11 m. Answer in units of N. Find the centripetal acceleration of the ...
February 20, 2011 by CR

algebra II,math
this is another from a different section can you show me how to solve it. An electronics company produces three models of stereo speakers, models A, B, and C, and can deliver them by truck, van, or station wagon. A truck holds 2 boxes of model A, 2 of model B, and 3 of model C...
May 29, 2007 by mathstudent05

math
Toby is making a scale model of the battlefield at Fredericksburg. The area he wants to model measures about 11 mi by 7.5mi. He plans to put the model on a 3.25 ft by 3.25ft square table. On each side of the model he wants to leave at least 3 inches between the model and the ...
November 30, 2012 by greg

Algebra
Company produces three models of speakers. models A,B,and C and can deliver them by truck, van and car. Truck holds 2 boxes of model A, 2 of model B and 3 of model C. Van holds 3 boxes of model A, 4 boxes of model B, and 2 boxes of model C The car holds 3 boxes of model A 5 ...
December 13, 2009 by mike

math
Toby is making a scale model of the battlefield at Fredericksburg. The area he wants to model measures about 11 mi by 7.5mi. He plans to put the model on a 3.25 ft by 3.25ft square table. On each side of the model he wants to leave at least 3 inches between the model and the ...
November 30, 2012 by greg

math
change both measurements to the same unit of measure,and find the scale factor. 1. 4in. model of a 6ft.cabinet 2. 4cm. model of a 2m. door. 3. 12ft. model of a 100yd. playground 4. 20m. model of a 3km. street.
December 1, 2009 by citaly

Chemistry
according to the bohr model of the hydrogen atom, what is the closest an electron can get to the nucleus? What is the farthest it can get from the nucleus? ( if the latter answer seems absurb, it might amuse you to know that it is the same value predicted by present-day ...
November 28, 2012 by Anonymous

physics
A small ball with a mass of 0.05 kg moves along a circular orbit with a radius of 0.9 m at a speed of 9.0 m/s. What is the angular momentum of the ball? If the angular momentum of this ball were quantized in the same manner as the angular momentum of electrons in the Bohr ...
April 22, 2014 by Anonymous

statistics
I'm trying to work through the proof for SST = SSM + SSE MEAN = ∑(X)/N SST = ∑((x - MEAN)^2) = ∑(x^2 - 2 * x1 * MEAN + MEAN^2) = ∑(x^2) - 2 * MEAN * ∑(x) + N * MEAN^2 = ∑(x^2) - 2 * ∑(x)^2/N + ∑(x)^2/N = ∑(x^2) - ∑(x...
August 29, 2007 by statstudent

SCIENCE
HOW CAN WE MAKE A MODEL OF HEART WITHOUT USING THERMACOL..Plz give me idias of making a model of heart.
October 3, 2007 by ASHMEETA

Science-Greenhouse Effect
I need to design a NEW model for the atmosphere that covers the shortfallsin the greenhouse model. Any suggestions?
April 23, 2013 by HS

Chemistry
Draw Bohr diagrams of the following: A) O and O2- I know how to draw the regular O bohr diagram. 2 electrons in the first shell, and 6 in the outer one, but I don't get how to draw a 02- diagram. Do I just take away 2 electrons from the outer shell?
September 18, 2010 by Anonymous

Physics
Hi I was wondering if somebody could help me with this question? According to the Bohr model, what determines the color of light emitted when an electron moves from one energy level to another? The color (wavelength) is determined by the change in energy level of the electron...
October 10, 2006 by Isabel

science
If a scale model of the planets are built with Earth's diameter set to 10 centimeters, how big would the model of Jupiter have to be in centimeters?
April 1, 2013 by wyatt

Physics, error derivation
I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)-(1/n^2initial)] I've never had to derive anything like this ...
March 8, 2011 by trace

Statistics
A manufacturer makes two models of an item: model I, which accounts for 80% of unit sales, and model II which accounts for 20% of unit sales. Because of defects, the manufacturer has to replace (or exchange) 10% of its model I and 18% of model II. If a model is selected at ...
September 22, 2010 by Lori

physics, error calculation repost
I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)-(1/n^2initial)] I've never had to derive anything like this ...
March 8, 2011 by Trace

Science
I need pictural or written ideas in order to help make a drawn model to explain the greenhouse effect. I've used websites but they are to technical for what I'm looking for. I'm basically looking for a model but I can't copy any. Please give me your opinions.
April 27, 2013 by HS

Technology
12. A clay model of a new automobile design would be considered a a. wireframe model b. surface model c. mock-up d. prototype C
January 19, 2010 by y912f

Statistics
A manufacturer makes two models of an item: model I, which accounts for 80% of unit sales, and model II, which accounts for 20% of unit sales. Because of defects, the manufacturer has to replace (or exchange) 10% of its model I and 18% of its model II. If a model is selected ...
October 4, 2007 by Sophia

science, chemestry
Identify which concepts/topics you believe that you will need to apply to solve the problem below. Select all that apply. Covalent Bond Energy Ionic Bond Energy Single-electron Atom Ionization Energy Multi-electron Atom Ionization Energy Electronegativity Limiting Reagent ...
November 18, 2012 by smile

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