Saturday
April 19, 2014

Search: Examine the following set of ionization energy values for a certain element. How many valence electrons does an atom of the neutral element possess?

Number of results: 79,036

Chemistry
How would the electronegativity and first ionization energy values of lithium compare with the same values of oxygen? Why?
Monday, November 15, 2010 at 8:52pm by alicia

chemistry
the following values are the only energy levels of a hypothetical one electron atom: E6= -2x10^-19J, E4= -11x10^-19J, E2= -17x10^-19J, E5= -7x10^-19L, E3= -15x10^-19J, E1= -20x10^-1J a: if the electon were in the n = 3 level, what would be the highest frequency and minimum ...
Saturday, April 5, 2014 at 4:51pm by hotmom

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 answer is P is a ...
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

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 - check answers
1) Which element has the largest first ionization energy? A) Rb, B) Fr, C) K, D) Na, E) Mg Answer: E 2) Which has the highest electronegativity? A) Na, B) Cs, C) Si, D) Te, E) Cl Answer: E 3) In which of the following are the bonds arranged in order of increasing polarity? A) ...
Saturday, March 22, 2014 at 8:22pm by Amanda

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 higher the ionization level, and the lower ...
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

physics
For a hydrogen atom, determine the ratio of the ionization energy for the n = 3 excited state to the ionization energy for the ground state.
Monday, March 31, 2014 at 3:10pm by fifi

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 held...
Tuesday, October 31, 2006 at 7:58pm by Mark

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
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

Algebra
84. Examine the following set of coordinates. Does this set come from a function? (3,8), (9,0), (8,6), (6,6), (3,9), (67,9) No, it is not a function ?
Friday, May 7, 2010 at 11:45am by y912f

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^-)/(1.0...
Wednesday, March 7, 2012 at 12:26am by DrBob222

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
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 - 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

grammar
In the following sentence select the compound predicate. We could study coins, see jewels, or examine tools. A. study,see B. could study, examine C could study,see, examine D study, see, examine Which of these is the correct answer. I think its D. I am not real good with these...
Friday, October 9, 2009 at 4:07pm by Anonymous

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. It...
Sunday, April 19, 2009 at 11:51pm by sh

Chemistry
See this table for ionization energy. http://www.lenntech.com/periodic-chart-elements/ionization-energy.htm
Thursday, April 3, 2014 at 1:31am by DrBob222

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
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 energies ...
Friday, September 15, 2006 at 8:44pm by Doug

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 x ...
Monday, November 28, 2011 at 12:31pm by A.J. Cooper

Chem
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 x ...
Thursday, March 6, 2014 at 5:14pm by Jeimmy Vinueza

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
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

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
Explain which atom of the following pair have the smaller ionization energy: As, I
Friday, February 18, 2011 at 1:46pm by Emily

algebra
The domain is the set of all mapped x values, which is {3}. The range is the set of all y values that an x maps to, which is {9, 10, 11, 12}. Because multiple x values map to different y values, the relation is not a function.
Monday, December 14, 2009 at 11:24pm by Marth

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

Chemistry
Rank the following in terms of increasing first ionization energy. 1. Na, Mg, N, O, F
Friday, November 18, 2011 at 5:39pm by Anonymous

Chemistry
Among the following, which element has the lowest ionization energy? A. Na B. Cl C. Cs D. I
Friday, November 8, 2013 at 2:36pm by Jake

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
The triprotic acid H3A has ionization constants of Ka1 = 6.8 103, Ka2 = 8.1 109, and Ka3 = 5.0 1012. Calculate the following values for a 0.0760 M solution of NaH2A [H+] = ? [H2A-]/[H3A]= ? Calculate the following values for a 0.0760 M solution of Na2HA. [H+]= ? [HA2-]/[...
Tuesday, February 26, 2013 at 7:25pm by Nancy

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
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

chemistry
The triprotic acid H3A has ionization constants of Ka1 = 9.9 102, Ka2 = 2.7 108, and Ka3 = 5.9 1011. a). Calculate the following values for a 0.0570 M solution of NaH2A H+ ?? [H2A^-/H3A]?? b). Calculate the following values for a 0.0570 M solution of Na2HA. H+ ?? [HA^2-/...
Thursday, March 28, 2013 at 6:57pm by Laura

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

statistics
1. A datd set consists of a set of numerical values. which, if any, of the following statements could be correct? Thanks.
Tuesday, April 3, 2012 at 5:02pm by favor

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
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
I'm sorry I'm just really confused by ionization energies and the heat of formation. Could you explain how to set up this problem? Use the data (kJ) for ionization energies, electron affinities and heats of formation to find the lattice energy of Fe3O2(s) according to the ...
Thursday, January 27, 2011 at 12:57am by Marissa

quemistry
arrange the following groups of elements in order of increasing ionization energy : a. Be,Mg,Sr. b. Bi,Cs,Ba. c. Na,A1,S
Tuesday, November 13, 2012 at 10:12am by cris

Chemistry
All of the following are true EXCEPT; A. the n=4 energy level has no f orbitals B. the 2p orbitals can have a maximum if 6 electrons C. the s orbital has a spherical shape D. there are 5 orbitals in a set E. the n=3 energy level has a set of d orbitals.
Sunday, November 18, 2007 at 4:29pm by Lauren

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

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, I ...
Sunday, October 17, 2010 at 12:26am by Becca

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

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
Select all true statements from the following: a. ) Metals are good conductors of heat and electricity. b. ) Nonmetals generally react by forming covalent bonds (i.e. sharing electrons) or by gaining electrons to form anions. c. ) Halogen atoms have the highest ionization ...
Saturday, October 4, 2008 at 11:23pm by Vishnu

statistics
If you calculate this by hand, it might be helpful to set up a table of x values (self-esteem) and y values (grades), x^2 values, y^2 values, and xy values (x times y). Total each set of values. Once you have all the values, plug them into the formula to calculate Pearson r. ...
Sunday, April 24, 2011 at 7:03pm by MathGuru

chemistry
Which of the following elements would have the largest third ionization energy: K, Ca, Ga? What is third? Thanks in advance.
Wednesday, April 29, 2009 at 11:42pm by sh

chemistry
The first ionization potential of the elements B, C, and N (atomic numbers 5, 6, and 7) steadily increases, but that of O is less than that of N. The best interpretation of the lower value for O is that: 1. the ionization potential of N is a maximum and the values decrease ...
Wednesday, September 15, 2010 at 12:45am by dave

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

Math
1. Which of the following numbers are integers?11/3, 9.7, -163, -3/8, 1 A-1 AND -163? 2. Determine the maximum and minimum values of the following set of numbers. 3,-36/7, -1, -2/3, 5/4, -5, 26/9 a- MAX 3 MIN. -5? 3.Add -4/5+(-3/4)= -31/20? 4. ADD 11 +(-4)= 7? 5. ADD -3/5 + (8...
Friday, October 16, 2009 at 1:23pm by Adian

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

statistics
A data set consists of a set of numerical values. Which, if any, of the following statements could be correct? There is no mode. There are two modes. There are three modes.
Saturday, March 13, 2010 at 9:25pm by angel

statistics
A data set consists of a set of numerical values. Which, if any, of the following statements could be correct? a. There is no mode. b. There are two modes. c. There are three modes.
Monday, August 9, 2010 at 5:33pm by Trina

statistic
A data set consist of a set of numerical values. Which if any of the following statements could be correct? a. There is no mode. b. There are two modes. c. There are three modes.
Sunday, August 21, 2011 at 2:33pm by Sonia

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 connection ...
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 connection ...
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 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 connection between...
Sunday, November 13, 2011 at 7:36pm by Jessica

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

Algebra 2
graph the function on your graphing calculator. The domain is the set of x values for which the function is defined; the range is the set of y values. Look at the graph and determine the set.
Monday, December 17, 2012 at 6:26pm by Jennifer

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

chemistry correction
1. Which two elements react vigorously with each other? A: Chlorine and lithium B:Chlorine and potassium C:iodine and lithium D:iodine and potassium my answer is B 2. which statement about electronegativty is correct. A: Electronegativity decrease across a period. B:...
Thursday, March 11, 2010 at 1:16pm by Richard

Math
1. Which of the following numbers are integers?11/3, 9.7, -163, -3/8, 1 A-1 AND -163? 2. Determine the maximum and minimum values of the following set of numbers. 3,-36/7, -1, -2/3, 5/4, -5, 26/9 a- MAX 3 MIN. -5? 3.Add -4/5+(-3/4)= -31/20? 4. ADD 11 +(-4)= 7? 5. ADD -3/5 + (8...
Friday, October 16, 2009 at 3:05pm by Adian

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
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

Math
1. Which of the following numbers are integers?11/3, 9.7, -163, -3/8, 1 A-1 AND -163? 2. Determine the maximum and minimum values of the following set of numbers.-36/7, -1, -2/3, 5/4, -5, 26/9 a- MAX 3 MIN. -5? 3.Add -4/5+(-3/4)= 1 11/20? 4. ADD 11 +(-4)= 7? 5. ADD -3/5 + (8/...
Friday, October 16, 2009 at 12:14pm by Adian

Algebra
You have a relation between the set of x values and the set of y values. What do you want to do with it?
Wednesday, December 16, 2009 at 7:17pm by Marth

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

Statistics
2. Any given data set consists of a set of numerical values. Please indicate by stating yes or no for each of the following statements whether or not it could be correct for any data set. (This question is not referring to the data that is given above.) a. There is no mode. b...
Wednesday, July 7, 2010 at 10:55pm by Anonymous

CHEM
Which of the following elements has the highest first ionization energy? Element then radius (pm): X = 105pm Y = 175pm Z = 274pm I think that the answer is "Z-274pm", but I just would like to make sure.
Tuesday, November 13, 2007 at 2:03am by K

chemistry help-
Which of the following has the lowest second ionization energy? a. Ca b. Ne c. K d. Ar e. Na Arrange the following set of ions in order of increasing atomic radii. Ca2+, Cl-, K+, P3-, S2- a. Ca2+ < K+ < P3- < S2- < Cl- b. K+ < Cl- < Ca2+ < S2- < P3- c. ...
Wednesday, October 8, 2008 at 6:12pm by michael

CHEMISTRY (WEBWORK)
SPARTAN: Enter the numerical energy values (X, Y, & Z) on the y-axis and calculate the Ea and G. (Note: This is a multipart problem. First input your values for X, Y, and Z. When you are satisfied with your values submit them and check the box Go on to next part (When you ...
Monday, July 19, 2010 at 7:04pm by arthur

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

Math
Make the number of lawns your x values and the number of hours your y values. Graph them accordingly. The domain is the set of x values and the range is the set of y values. One way of recognizing a function is the vertical line test. If there is more than one point when you ...
Sunday, November 24, 2013 at 2:57pm by Anonymous

statistics
The question is: A data set consists of a set of numerical values. Which, if any, of the following statements could be correct? a. there is no mode b. there are two modes c. there are three modes I answered a. there is no mode.
Tuesday, May 4, 2010 at 9:44pm by Brooke

chemistry
Light (a photon) is emitted by an atom when an electron jumps from a higher to a lower energy level. According to the Bohr theory of the atom, the energy levels that an electron can occupy in a atom are discreet. If the energy levels are discreet, their differences (photon ...
Monday, January 12, 2009 at 4:38pm by GK

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
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

Physics
please check: Which of the following energy forms is associated with an object in motion? a. potential energy b. elastic potential energy c. nonmechanical energy d. kinetic energy i think its B Which of the following energy forms is associated with an object due to its ...
Monday, February 9, 2009 at 5:34pm by y912f

functions
The answer to the question lies in the definition of a function, which is a transformation from a set X of values to a set Y of values, such that any value in the set X will be transformed to one and only one value in the set Y. An ordered pair (x,y) represents one particular ...
Friday, June 25, 2010 at 4:11pm by MathMate

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
What is the enthalpy change (in kJ/mol) for the following process? Na+(g) + Br-(g) --> NaBr (s) Hint: use the Born-Haber cycle Note: the reference state for Br2 is Br2(l) not Br2(g) Data (in kJ/mol): enthalpy of sublimation of Na(s): 107 standard enthalpy of formation of ...
Tuesday, February 1, 2011 at 11:50pm by Crystal

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

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