Number of results: 15,223
Chemistry
Estimate the change in energy when solid rubidium reacts with gaseous diatomic chlorine molecules. Express your answer in units of kJ/mole. Do not refer to the periodic table to solve this problem. The following data may be useful in your calculation: Madelung Constant: 1.763 ...
Saturday, November 17, 2012 at 4:59pm by Basim
chemistry
Estimate the change in energy when solid rubidium reacts with gaseous diatomic chlorine molecules. Express your answer in units of kJ/mole. Do not refer to the periodic table to solve this problem. The following data may be useful in your calculation: Madelung Constant: 1.763 ...
Saturday, November 17, 2012 at 8:32am by amar chauhan
Chemistry
It takes 208.4 kJ of energy to remove one mol of electrons from the atoms on the surface of rubidium metal. If rubidium metal metal is irradiated with 254-nm light, what is the maximum kinetic energy the released electrons can have?
Tuesday, January 24, 2012 at 11:28pm by Kaleen
Chemistry
It takes 208.4 kJ of energy to remove 1 mole of electrons from 1 mole of atoms on the surface of rubidium metal. How much energy does it take to remove a single electron from an atom on the surface of solid rubidium in Joules? What is the maximum wavelength of light capable of...
Sunday, October 30, 2011 at 11:11am by franz
chemistry
rubidium is the fourth element in group 1. predict the following properties of rubidium and its compunds: A. appearence B. hardness C. reaction with water D. appearance and solubility of rubidium chloride E. electrical conductivity
Tuesday, October 12, 2010 at 12:46pm by chelsea
chemistry final-urgent
Choose the element with the highest ionization energy element: Na, Mg, Al, P, S In my book: ionization energy increase from left to right and bottom to top. Na<Mg<Al<P<S S is highest ionization energy? my instructor review this problem and his ...
Tuesday, December 14, 2010 at 6:55am by lianne
Chemistry130
ionization energy is the energy to remove an electron. The further an electron is from the nucleus, the less is ionization energy. So atom size is a predominate factor.
Thursday, September 17, 2009 at 10:18am by bobpursley
Chemistry
Suppose that a PES experiment is performed in which mercury vapor is irradiated with ultraviolet light of wavelength 58.4 nm. Energy of a photon of this light is 21.2 eV. Write an equation that shows the process corresponding to the first ionization energy of Hg. the kinetic ...
Monday, April 5, 2010 at 5:55pm by Jerica
chemistry
This is a lengthy problem, but I really don't understand it. Any assistance given would be greatly appreciated. An analysis was done on a rock sample to determine its rubidium content. The rubidium content of a portion of rock weighing .350g was extracted, and to the ...
Monday, February 15, 2010 at 2:42pm by Jane
chem
the ionization energy for atomic hydrogen is 1.31x10^6 J/mol. what is the ionization energy for He^+
Tuesday, December 14, 2010 at 8:42pm by kate
chem
order the elements Mg, K, Ca, S according to second ionization energy I know that K would have the highest second ionization energy, then come S bec it takes more energy to remove an electron from a nonmetal than a metal, which is next ?
Monday, November 24, 2008 at 1:26am by Natash
chemistry
Ionization is the removal of an electron from an atom. Nonmetals have higher ionization energies than metals since it is harder to remove an electron from a nonmetallic atom. When you compare elements on the same row (period) of the periodic table, the one farther to the right...
Sunday, October 26, 2008 at 1:39pm by GK
Chem
Which group shows the correct order of first ionization energy? Ca > Na > K Al > Si > P K > Ca > Ge Na > P > Cl Cs < Rb < Na I know the closer the element is to the right side of the table, group 8, the ...
Saturday, April 19, 2008 at 1:43pm by Ginger
chemistry
i have no idea how ionization works, yet i have to do a worksheet on it! help! how does ionization, and how do you tell which element has a higher ionization energy in relation to another? PLZ ANSWER SOON! I NEED HELP!
Sunday, October 26, 2008 at 1:39pm by Natilie
Chemistry
why does inoinzation energy tend to decrease from top to bottom within a group? i'm not sure, but i think it has something to do with the size of the element The electrons involved in ionization, that is, the outermost electrons, are farther away from the nucleus, and are ...
Tuesday, October 31, 2006 at 7:58pm by Mark
CHEMISTRY
Ionization is when an electron is removed from an atom and ionization energy is the energy required to do this. "Electrons stream from the negative electrode to the positive electrode. In the process of moving from one electrode to the other they knock electrons in the ...
Sunday, November 13, 2011 at 6:08pm by Jessica
chemestry
write a chemical equation for an atom losing a third electron. would the ionization energy for this reaction be larger or smaller that the ionization energy for the lloss of the first or second electron? explain
Tuesday, March 22, 2011 at 9:07pm by celina
chemistry
does chlorine or carbon have greater ionization energy? I would expect it to be harder to pull an electron away from 17 + charges on chlorine than 6+ charges on carbon; although the outer electron is farther away in Cl. You can look these things up in a table; I did and Cl has...
Saturday, December 16, 2006 at 5:20pm by Carter
CHEMISTRY (ionization energy)
find the ionization energy of I-, I, and I+ I know you have to use E= hc/lambda, and c=lambda x v, but how do i get v?
Sunday, November 6, 2011 at 7:05pm by Ferdinand
Chemistry (Follow up post - Dr.BOB22)
Ionization is when an electron is removed from an atom and ionization energy is the energy required to do this. "Electrons stream from the negative electrode to the positive electrode. In the process of moving from one electrode to the other they knock electrons in the ...
Sunday, November 13, 2011 at 9:39pm by Jessica
Chemistry
Which trends are observed when the elements in Period 3 on the Periodic Table are considered in order of increasing atomic number? (1) The atomic radius decreases, and the first ionization energy generally increases. (2) The atomic radius decreases, and the first ionization ...
Tuesday, November 6, 2007 at 9:03pm by John
chemistry - ionization energy(check + help)
I need help understanding by boron does not follow the ionization trend across the period is lower than the first two elements in the same period, where as it should be higher. has it got to do with the p block having an electron, which makes it easier to remove the electron ...
Wednesday, June 8, 2011 at 4:24am by Farah
Chemistry
1)Identify which concepts/topics you believe that you will need to apply to solve the problem below. Select all that apply. a)Covalent Bond Energy b)Ionic Bond Energy c)Single-electron Atom Ionization Energy d)Multi-electron Atom Ionization Energy e)Electronegativity f)...
Sunday, November 18, 2012 at 11:34am by selly
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 ...
Sunday, November 18, 2012 at 12:18pm by smile
chemistry
Why do you think that the ionization energy tends to decrease within a family of the periodic table? Since ionization energy tends to increase within a period of the periodic table because they are in higher energy orbitals so it'll take more energy to remove the electrons...
Sunday, April 19, 2009 at 11:51pm by sh
Chemistry
Do these three things have ionization energy levels? To be honest, I'm not quite sure how ionization works.
Sunday, November 13, 2011 at 2:34pm by Jessica
Chemistry
It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an atom of hydrogen, making the assumption that ionization is the transition from n=1 to n=infinity. I don't know how to solve this problem. A. -2.18...
Monday, November 28, 2011 at 12:31pm by A.J. Cooper
Chemistry
rubidium sulphite or rubidium (1) sulphate
Thursday, November 22, 2007 at 1:35am by y
Chemistry
First you find the Momentum (P) from the de Broglie eqn: P = h/lambda, where h is the Plancks constant. Then you find the velocity (v) from the eqn: P = m*v, where m is the Electron Mass. Then substitute v in the KE eqn: KE = 0.5*m*v^2. Add this KE to the Ionization Energy of ...
Saturday, January 12, 2013 at 7:35am by Chemoengineer
chemistry
Enter the formula and state of the major species that result when a few grams (about 0.01 mol) of each substance is added to 100 mL of water. When appropriate use water to form species such as the hydronium ion. Separate multiple species by commas. rubidium dihydrogen ...
Sunday, June 6, 2010 at 4:44am by Judy
chemistry
You really need to look at your posts. They don't make sense to me because of the various symbols used. Using {\rm and_ along with } is confusing unless we know what those symbols mean. Apparently you want the formula for rubidium nitrate. RbNO3. rubidium sulfate. Rb2SO4. ...
Monday, September 13, 2010 at 3:11pm by DrBob222
chemistry
The first ionization energy of a hydrogen atom is 2.18 aJ. Assuming the ionization efficiency is 82%, how many such photons are needed to 1.00 * 10^16 atoms?
Saturday, October 6, 2012 at 5:42pm by gine
boooring chemistry!!:(
Halogens are non-metals and if observed they form ionic bonds with metal because halogens have a high ionization energy to attract the metals. if you don't know what ionization energy is it means the energy need to to remove the electrons from an atom. Halogens also form ...
Tuesday, June 21, 2011 at 7:02pm by molly
chemistry
Pure acetic acid (HC2H3O2) is a liquid and is known as glacial acetic acid. Calculate the ient M 1) Explain why the lattice energy of MgS is approximately 4 times as large as that of NaCl. 2) Draw the Lewis structure for the acetate ion, CH3CO2—, including any important ...
Saturday, July 16, 2011 at 2:01pm by oria
Chemistry
It becomes easier to pull electrons away (that's what ionization energy is) from an atom as the electron is further from the nucleus. Therefore, the smallest ionization potential will be that of the largest atom.
Monday, November 19, 2007 at 6:52pm by DrBob222
College chemistry
Pure acetic acid (HC2H3O2) is a liquid and is known as glacial acetic acid. Calculate the ient M 1) Explain why the lattice energy of MgS is approximately 4 times as large as that of NaCl. 2) Draw the Lewis structure for the acetate ion, CH3CO2—, including any important ...
Friday, July 1, 2011 at 7:59pm by oria
chemistry
The momentum of the electron is h /(wavelength) h is Planck's constant. Use that to compute the electron energy. Add the electron energy to the ionization energy (13.6 eV) for the photon energy.
Friday, January 11, 2013 at 1:22pm by drwls
physical science
The ionization energies of Li, Na, K, Rb, and Cs are respectively 5.4, 5.1, 4.3, 4.2, and 3.9 eV. All are in Group 1 of the periodic table. Explain the decrease in ionization energy with increasing atomic number in this group.
Monday, October 17, 2011 at 1:22am by Sheryl
Chemistry
A laser emitting light with a wavelength of 480 nm is directed toward the surface of rubidium metal. The work function for rubidium metal is 2.16 eV (1 eV = 1.602 x 10-19 J)
Tuesday, November 16, 2010 at 11:16am by Charles
Science HELP 2nd question
A sample originally contained 2.5 g of rubidium 87 now contains 1.25 g. The half life of rubidium - 87 is 6 x 10 ( to the 10th) years. How old is teh sample? Is this possible? why or why not?
Friday, February 8, 2008 at 1:05pm by sam
AP Chemistry Born-Haber Cycle?
When using the Born-Haber Cycle for Na2S, do I double the ionization energy of Na since there are two Na ions for every S ion in Na2S? Also, the problem asked me to find the change in energy for S- (g) + e- => S2- (g). Assuming that you do double the ionization energy, ...
Sunday, October 17, 2010 at 12:26am by Becca
chemistry
For a week acid whose ionization constant is 1.75 x 10(-5), the pH of its solution is 3.0. Determine its degree of ionization and its percent ionization.
Thursday, October 13, 2011 at 7:44pm by chris
chem 115
The first ionization energy is the energy necessary to completely remove the outermost electron from an atom. For a Hydrogen atom this energy is 2.18 X 10^-18J. If you were to use a laser to provide this energy, what is the wavelength (in nm) of the light emitted from the laser?
Thursday, September 23, 2010 at 1:01am by Kelsey
Chemistry - College
The ionization energy of a certain element is 472 kJ/mol. However, when the atoms of this element are in the first excited state, the ionization energy is only 166 kJ/mol. Based on this information, calculate the wavelength of light emitted in a transition from the first ...
Tuesday, October 26, 2010 at 8:13pm by Alexis
Chemistry
how does the outer energy level relate to the ionization energy?
Tuesday, November 30, 2010 at 7:04pm by Sandy
Chemistry
Multi-electron Atom Ionization Energy, Conservation of Energy, Wave-Particle Duality.
Sunday, November 18, 2012 at 11:34am by c
physics
Calculate the ionization energy of doubly ionized Lithium, which has Z=3. Construct also the energy level diagram for it.
Tuesday, April 19, 2011 at 7:37am by qwer
chemistry
ionization energy is the minimum energy (Kj/mol)required to remove an wlectron from a gaseous atom in its ground state. affinity energy: the negative of the energy change that occurs when an electron is accepted by an atom in the gaseous state to form an anion
Sunday, January 24, 2010 at 12:18am by bun
Chemistry
Calculate the work done when 70.0g of tin dissolves in excess acid at 3.00 atm and -15.0 C. Sn(s)+2H^+(aq) -> Sn^2+(aq)+H2(g) Assume ideal gas behavior. Any ideas? I've come up with a few different answers and can't come to a conclusion. I see the following ...
Friday, September 15, 2006 at 8:44pm by Doug
Chemistry
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told to look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain the ...
Sunday, November 13, 2011 at 7:36pm by Jessica
CHEMISTRY
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain the ...
Sunday, November 13, 2011 at 6:08pm by Jessica
CHEMISTRY
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain the ...
Sunday, November 13, 2011 at 6:08pm by Jessica
Chemistry
Which of the following has the higher ionization energy and why: Li or Ba? I cannot figure this out because they are in different periods but Ba is down on the periodic table telling me that it may have a higher ionization than Li. Help please?
Saturday, August 7, 2010 at 4:29pm by Ashley
chemistry
Do you mean higher ionization energy? Phosphorus has a higher first ionization energy. Its 2p subshell is half-filled with one eletron in each orbital. The three electrons have identical (parallel) spins. A sulfur atom has one more electron than phosphorus in the 2p subshell. ...
Thursday, October 22, 2009 at 9:52am by GK
science
(c) The kinetic energy of the emitted electrons is measured to be 15.2 eV. What is the first ionization energy of Hg in kJ/mol?
Sunday, December 16, 2012 at 3:32pm by Samantha
science
estimate the change in energy when solid rubidium reacts with gaseous diatomic chlorine molecules. Express your answer in units of kJ/mole
Friday, November 16, 2012 at 6:21am by lef
Chemistry
I dont understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy must be supplied to ...
Wednesday, March 5, 2008 at 11:48pm by johnny
Chemistry
i dont understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy must be supplied to ...
Wednesday, March 5, 2008 at 6:45pm by johnny
chemistry
how do you write the ionization reaction and the acid ionization constant expression for the third ionization of phosphoric acid in water? Can you explain the main concepts that are involved in this?
Saturday, May 12, 2012 at 8:18pm by ryan
Chemistry
Which value represents the first ionization energy of a nonmetal? 497.9kJ, 577.4kJ, 811.7kJ, or 1000.kJ ? I think the answer is 1000. kJ, since it is the highest amount. Am I correct? My reasoning is that nonmetals have higher ionization energies than metals.
Monday, December 1, 2008 at 8:12pm by Anonymous
chemistry
Can someone help me with this homework problem? Which of the following is the best explanation as to why lithium is the strongest reducing agent in the alkali metals? A) relatively high charge density of Li B) lowest ionization energy of the metals C) most positive standard ...
Saturday, April 21, 2007 at 11:30pm by ninjaturtle
Chemistry
What amount of energy is required to completely ionize 21.5 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole? Answer in units of J
Wednesday, October 17, 2012 at 9:53pm by Peter
chemistry
The first ionization energy of a carbon atom is 1.81 aJ. What is the frequency and wavelength, in nanometers, of photons capable of just ionizing carbon atoms? v=______s^(-1) lambda =_____nm Assuming an ionization efficiency of 47.0%, how many such photons are needed to ionize...
Tuesday, April 2, 2013 at 7:02am by Anonymous
chemistry
The first ionization energy of a carbon atom is 1.81 aJ. What is the frequency and wavelength, in nanometers, of photons capable of just ionizing carbon atoms? v=______s^(-1) lambda =_____nm Assuming an ionization efficiency of 47.0%, how many such photons are needed to ionize...
Tuesday, April 2, 2013 at 6:58am by Anonymous
Chemistry
Calulate the degree of ionization for NH3(aq) in 1.0 M solution, Kb = 3.236E-4. I've seen degree ionization for acids and not bases. Do I need to find the Ka [H+] value of the base to determine the degree of ionization?
Wednesday, March 7, 2012 at 12:26am by Rosi
chemistry
Zinc is more reactive (Has a lower ionization energy) than Lead. And, the reaction is spontaneous (lead provides the energy for electron transfer plus extra energy). Later you will find out about the concept Gibbs Free Energy and Entropy. All chemistry is rooted in physics ...
Saturday, June 20, 2009 at 11:37am by bobpursley
ap chemistry
What amount of energy is required to com- pletely ionize 26.9 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole? Answer in units of J
Monday, April 15, 2013 at 7:02pm by cheri
Chemistry
Shown below are several options for the box notations of the ground state electron configuration of the following gas-phase species. Identify the correct electronic configuration. i. Al2− ii. Mn (a)Select the reason that best explains why the first ionization energy ...
Friday, January 11, 2013 at 8:06am by c
Chemistry
1.) The average velocity of Cl(2) molecules is 2.50 x 10^3 m/sec at a temp of 25 C therefore the average velocity of helium atoms is ?? [ i got the answer 5.94 x 10^2 m/Sec is that right] 2.) A gas is allowed to expand from 1.5 : to 12.5 L against a constant pressure of 6.5 ...
Sunday, March 29, 2009 at 5:43pm by Emmanuel
Chemistry
Ionization energy is defined as the minimum energy required to remove an electron from the ground state (n0) to infinity (n∞). Determine the wavelength of radiation required to ionize the hydrogen electron from the n = 2 energy level. Calculate the energy (Joules) ...
Monday, October 26, 2009 at 4:01pm by Sarah
Chemistry (Follow up post - Dr.BOB22)
The color depends upon the energy emitted when the electron returns to the atom (the reverse of ionization). In a sense, then, what you say is true but it's an odd way of saying it. In addition, the quotes you have seem out of place in your short discussion. The words don...
Sunday, November 13, 2011 at 9:39pm by DrBob222
Chemistry
No, it's the same concept as %ionization for acids. Set up an ICE chart for NH3 ..........NH3 + H2O ==> NH4^+ + OH^- initial...1.0M..........0........0 change.....-x............x........x equil.....1-x............x........x Then calculate OH^- and % ionization = (OH...
Wednesday, March 7, 2012 at 12:26am by DrBob222
Chemistry
What's the relationship between ionization energy and electron affinity? I ionization eneergy deals with losing electrons and electron affinity deals with gaining electrons, but I don't know how to explain the relationship.
Friday, February 18, 2011 at 4:21pm by Emily
chemistry
calculate the lattice energy of sodium oxide (Na2O) from the following data: Ionization energy of Na(g): 495 kJ/mol Electron affinity of O2 for 2e: 603 kJ/mol Energy to vaporize Na(s): 109 kJ/mol O2(g) bond energy: 499 kJ/mol Energy change for the reaction 2Na(s)+ 1/2 O2(g)--&...
Friday, September 14, 2012 at 7:46pm by Meeeee
chemistry - ionization energy(check + help)
yes.
Wednesday, June 8, 2011 at 4:24am by bobpursley
Chemistry
How much energy, in joules, must be absorbed to convert to Na+ all the atoms present in 1.00mg of gaseous Na? The first ionization energy of Na is 495.8 kJ/mol
Sunday, December 9, 2012 at 12:41pm by Chironjit
chem
How much energy, in joules, must be absorbed to convert to Na all the atoms present in 1.00mg of gaseous Na? The first ionization energy of Na is 495.8kj/mol .
Sunday, October 26, 2008 at 2:38pm by tomi
chemistry
What is the maximum number of Cs+ ions that can be produced per joule of energy absorbed by a sample of gaseous Cs atoms? Do you start by knowing the ionization energy for Cs. I really need assistance.
Tuesday, October 12, 2010 at 11:43am by Ysabella
chemestry
The ionization energy is the energy required to release an electron from a neutral atom; i.e., to ionize it. metal + energy ==> M^+ + e. (Na ==> Na^+ + e) The electron affinity is the energy released when an atom gains an electron. A + e ==> A^- (Cl + e...
Tuesday, March 22, 2011 at 9:32pm by DrBob222
AP chem
It takes 208.4 kJ of energy to remove 1 mole of electrons from atom on the surface of rubidium metal. How much energy does it take to remove a single electron from an atom ont eh surface of solid rubidum? What is teh maximum wavelength of light capable of doing this? If 208.4 ...
Sunday, October 1, 2006 at 7:25pm by beth
chemistry
electronegativity=high ionization energy element 3
Tuesday, July 12, 2011 at 1:04pm by bobpursley
Chemistry
what are electronegativity, electron affinity, and ionization energy?
Sunday, September 27, 2009 at 10:44pm by mike
chemistry
fisrt ionization energy across period three
Monday, August 22, 2011 at 3:37am by wane
chem
Which elements have a higher ionization energy than sodium?
Friday, February 26, 2010 at 4:26pm by Anonymous
chemistry
what is the difference between electron affinity and ionization energy?
Sunday, January 24, 2010 at 12:18am by Jeremy
chem
why does fluorine have a higher ionization energy than iodine?
Sunday, January 24, 2010 at 12:14am by samuel
chemistry
Do nonmetals have a higher or lower ionization energy?
Monday, December 1, 2008 at 8:44pm by Anonymous
Chemistry
Which of the following elements has the smallest ionization energy? A. F B. Be C. B D. Mg E. C
Monday, November 19, 2007 at 6:52pm by Lauren
Physics
Q1. The answer is +13.6 eV A removed electron at infinite distance is defineed to have zero energy. Q2. Both are analogous inverse-square-law situations. The ionization energy needed to remove an electron is similar to the "escape velocity" kinetic energy needed to ...
Tuesday, May 26, 2009 at 3:53pm by drwls
Physics
The ground state of a hydrogen atom is 13.6 eV below the ionization threshold. If the free electron is to have 13.1 eV of kinetic energy, the total energy needed is 26.7 eV. Convert that to photon energy E in Joules using 1.6*10^-19 J per eV. Then use the Planck relationship E...
Monday, March 24, 2008 at 11:29am by drwls
Chemistry ? please
I was out sick & am copying a friends notes from class. My question is what does e- stand for? it easier to form a positive ion with a low ionization energy because a positive ion is formed by removing an e-(I think maybe electron) and the other one is e-s? The trend in ...
Thursday, December 4, 2008 at 9:14pm by Mike
chemistry
1 _____is defined as one-half of the distance between the nuclei of two adjacent metal atoms in the close packed crystal lattice ionic radius metallic radius covalent radius atomic radius 2 Except for rubidium and caesium, all common cations are smaller than all common anions ...
Monday, April 23, 2012 at 8:01am by mike
chemistry
explain fisrt ionization energy across period three
Monday, August 22, 2011 at 3:40am by wane
5th grade
radiation (light), chemical energy (ionization) and sound
Wednesday, January 13, 2010 at 9:12pm by drwls
Chemistry
i know its either 1 or 2 because i know the radius will decrease but i dont know about the ionization energy..
Tuesday, November 6, 2007 at 9:03pm by John
chemistry
what is the ionization reaction and acid ionization constant expression for the HS- ion in water?
Sunday, May 13, 2012 at 12:32pm by ryan
Physics
The following values are the only allowable energy levels of a hypothetical one-electron atom: E6 = =2 X 10^-19 J E5 = -7 X 10^-19 J E4 = -11 X 10^-19 J E3 = -15 X 10^-19 J E2 = -17 X 10^-19 J E1 = -20 X 10^-19 J A) If the electron were in the n = 3 level, what would be the ...
Sunday, January 24, 2010 at 5:22pm by Vea
chemistry asap!
I'm having trouble solving this percentage concentration problem: A student wants to make 5.00% solution of rubidium chloride using 0.377g of the substance. What mass of water will be needed to make the solution? [g RbCl2/(g RbCl2 + g H2O)]x100 = 5.00 Solve for g H2O. A ...
Wednesday, January 24, 2007 at 10:27pm by michelle
science
Estimate the 4th ionization energy of beryllium (Be). Express your answer in Joules (J/atom).
Friday, November 16, 2012 at 10:11pm by hi
Chemistry
Explain which atom of the following pair have the smaller ionization energy: As, I
Friday, February 18, 2011 at 1:46pm by Emily
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