Atomic Number 49

Question: Consider the element indium, atomic number 49, atomic mass 114.8 g.? Consider the element indium, atomic number 49, atomic mass 114.8 g. The nucleus of an atom of indium-112 contains A) 49 protons, 63 neutrons, 49 electrons. B) 49 protons, 49 neutrons. C) 49 protons, 49 alpha particles. D) 49 protons, 63 neutrons. E) 49 protons, 112 neutrons.

Answer: The atomic number gives the number of protons. The atomic mass minus the atomic number equals the number of neutrons In an electrically neutral atom, the number of electrons equals the number of protons. 112 - 49 = 63 Answer D is the best answer. The electrons are not in the nucleus.

Question: a certain isotope has an atomic number of 49 and a mass number of 99.? how many neutrons are in the nucleus ? a) 49 b) 99 c) 50 d) 148

Answer: the answer is C)(if you are given the mass number and the atomic number of a certain element just subtract the atomic number from the mass number:99-49=50

Question: How can I put this picture in the middle of these words? PROBLEM: Atomic Number: 49____________________ State of Matter: Solid Atomic Mass: 114.818______________________Number of protons: 49 **PICTURE*** Latin Name: Indium___________________________ Number of electrons: 49 Classification: Meta___________________________Number of neutrons: 66 ______________________________________… What do I have to do so it can be like this? Indium Atomic Number: 49______________________State of Matter: Solid Atomic Mass: 114.818__________________Number of protons: 49 Latin Name: Indium__________*****Picture*****_______… Number of electrons:49 Classification: Meta_______________________Number of neutrons: 66 ??????????????????????????????? What do i need to do?

Answer: If you're using Microsoft Word. Right click on the picture, click on Text Wrapping, then click on In Front of Text or Behind Text. You should be able to drag and position your picture now. If you don't find Text Wrapping when you right click, you should probably find it when you click Format Picture. Hope that helped. :D

Question: What do you think of the boys 1st gig? My boy and his bands 1st gig on you tube under "atomic number 49" check it out, let me know what you think. I know the question shouldn`t be in this section but it seems to be the most viewed place and i`m just so bloody proud of my boy!!

Answer: pmsl cheese a....i think your boys band are very good and u should be proud xx

Question: how to build an advanced atom model? I am doing a project and have to make an atom model of the atom Indium, atomic number 49. I've already built the atom, but I'm competing against other students so I need some ideas to make it really cool. The atom is made out of clay, the electrons surrounding the atom on toothpicks. Does anyone know anything I could add to that? Please make sure the instructions are detailed.

Answer: http://en.wikipedia.org/wiki/Atomic_orbi… Spheres and donuts of clay. It gets very complex as the atomic mass goes up. I would do one of the lighter elements. Carbon, Oxygen, or Nitrogen

Question: Simple Atomic ratio question? The element indium has an atomic mass of 114.8 g and an atomic number of 49. Naturally occurring indium contains a mixture of indium-112 and indium-115, respectively, in an atomic ratio of approximately (a) 6/94 (b) 25/75 (c) 50/50 (d) 75/25 (e) 94/6 I'd appreciate it if someone could show me how to do this.

Answer: We'll say there is x% of indium-112 is ocurring naturally.then(100-x)% of indium-115 is there. 114.8={112 * x%+ 115 * (100-x)%} / 100 when solve this equation you'll get 6.6. for X. so (100-x)= 100- 6.6= 93.4 ratio=indium 112/ indium 115 = 6.6 / 93.4 approximately it is 6/94 answer is (a)

Question: An ion having a 4+ charge and a mass of 49.9 amu has 2 electrons with principal quantum number n = 1, 8 electr? An ion having a 4+ charge and a mass of 49.9 amu has 2 electrons with principal quantum number n = 1, 8 electrons with n = 2, and 10 electrons with n = 3. Supply as many of the properties for the ion as possible from the information given. (Hint: In forming ions, the 4s electrons are lost before the 3d electrons.) (a) What is the atomic number? (b) What is the total number of s electrons? (c) What is the total number of p electrons? (d) What is the total number of d electrons? (e) What is the number of neutrons in the nucleus? (f) What is the ground-state electron configuration of the neutral atom? HEre's what I tried. For (a), I added up all of the electrons they give, and the sum is 20. If there is a 4+ charge, then there must be 24 protons, so is 24 the answer? For (b), if there are 2 electrons with principal quantum number n = 1, then there's only 1 s orbital, but how about the number of electrons? There is also what I had trouble with (b), (c), (d), (e)... (f), I don't really understand what it's asking.

Answer: You have a) right. For b) c) d) make an electron orbital diagram the one that has 1s 2s 2p 3s 3p so ans so on. Put all the electrons given in the corresponding orbitals and then add the s electrons, p etc. there are 8 s electrons; 12 p electrons and no d electrons. I am not so sure about the p and d electrons because this is chromium. e) Since it amu is less than normal you take the original amu ignoring the weight of the electrons and subtract 51.996-49.9 amu then divide that by 1.0087 amu ( neutron) and you get 2 so only 22 neutrons. f) 1s2 2s2 2p6 3s2 3p6 4s1 3d5

Question: Please help me with chmistry? Consider the element indium, atomic number 49, atomic mass 114.8 g. The nucleus of an atom of indium-112 contains A) 49 protons, 63 neutrons, 49 electrons. B) 49 protons, 49 neutrons. C) 49 protons, 49 alpha particles. D) 49 protons, 63 neutrons. E) 49 protons, 112 neutrons. is it D?

Answer: Yes, you are right~

Question: Chem questions. Atomic number and mass number. Try it out? 1. Chlorine, which has an atomic mass of 35.453 amu, has two naturally occuring isotopes, Cl-35 and Cl-37. Which isotope occurs greater in abundance. Explain. 2. Silver has two isotopes, 104-47 Ag has a mass of 106.905 amu ( 52.00% ), and 109-47 Ag has a mass of 108.905 amu (48.00%). What is the atomic mass of silver? 3. Data for chromium's four naturally occuring isotopes is provided below: ( Cr-50 ) Percentage abundance: 4.35%, Mass (amu): 49.946 ( Cr-52) Percentage abundance: 83.79%), Mass: 51.941 ( Cr-53) Percentage abundance: 9.50%, Mass: 52.941 (Cr-54) PA: 2.36%, Mass: 53.939 What is Chromium's atomic mass? Try them out. I actually did some today to see if I could get them right so your help is greatly appreciated as always.

Answer: 1. Cl-35, the number that is closet to the average atomic mass is in greater abundance. 2. The average atomic mass of silver is 107.9 amu (106.905)(0.5200) + (108.905)(.4800)= 107.9 amu 3. Chromiums average atomic mass is 51.97 amu (49.946)(.0435)+(51.941)(.8379)+(52.94… 51.97 amu

Question: EASY 10 POINTS, How can I fit this picture together with my words?!?!? PROBLEM: Atomic Number: 49____________________ State of Matter: Solid Atomic Mass: 114.818______________________Number of protons: 49 **PICTURE*** Latin Name: Indium___________________________ Number of electrons: 49 Classification: Meta___________________________Number of neutrons: 66 ______________________________________… What do I have to do so it can be like this? Indium I WANT: Atomic Number: 49______________________State of Matter: Solid Atomic Mass: 114.818__________________Number of protons: 49 Latin Name: Indium__________*****Picture*****_______… Number of electrons:49 Classification: Meta_______________________Number of neutrons: 66 ??????????????????????????????? What do i need to do? Am Using Wordpad

Answer: If HTML, text wrap around images examples: http://paynelessdesigns.com/dsns/dsn_tex… http://paynelessdesigns.com/dsns/dsn_ima… Ron

Question: How do you find the atomic mass of an unstable isotope? I have this problem that i cannot figure out. Rubidium has a stable isotope with 48 neutrons and a mass number of 85. Rubidium also has an unstable isotope with 49 neutrons and a mass number of 86. The stable isotope has a relative abundance of 72.17% and an atomic mass of 84.9117 amu. What is the atomic mass of the unstable isotope? could someone show me how to work this out...i tried two different ways to solve it, but i got two completely different answers, so i really don't know what to do now! Thanks!!!

Answer: You usually don't count unstable isotopes unless their half-life is extremely long. The mass numbers approximate the amu numbers since there is a certain binding strength reflected in the amu. Are you sure there aren't some other stable isotopes like 84 and 87?

Question: indium-112 and indium-115? Indium has atomic number 49 and atomic mass 114.8g. Naturally occurring indium contains a mixture of indium-112 and indium-115, respectively, what is the ratio of indium-112 to indium-115?

Answer: Let percentage of indium 112 be x and indium-115 be y 112x + 115y = 114.8 x+y = 1, so x = 1-y Substituting into the first equation, 112(1-y) + 115y = 114.8 112 - 112 y + 115y = 114.8 y = 0.9333333 x = 0.0666666 Ratio of indium-112 to 115: 0.066666:0.9333333 = 1:14

Question: Determine the number of protons and neutrons in each of the following isotopes of chromium and use the followi? Determine the number of protons and neutrons in each of the following isotopes of chromium and use the following natural abundances and masses to calculate its atomic mass. Cr-50 4.345% 49.9460 amu Cr-52 83.79% 51.9405 amu Cr-53 9.50% 52.9407 amu Cr-54 2.365% 53.9389 amu

Answer: The number of protons of all isotopes equals the atomic number of chromium = 24. The number of neutrons is determined by subtracting the atomic number from the mass number: Cr-50: 50 - 24 = 26 neutrons Cr-52: 52 - 24 = 28 neutrons Cr-53: 53 - 24 = 29 neutrons Cr-54: 54 - 24 = 30 neutrons The atomic mass of the element itself is given by the following formula: {Sum of[(isotope mass)x(abundance/100%)]} Thus, the mass of chromium is: Atomic mass = (49.9460)(0.04345)+(51.9405)(0.8379)+(52… Atomic mass = {2.170 + 43.52 + 5.029 + 1.276}/4 Atomic mass = 51.99 amu Cheers.

Question: Chemistry Challenge? 1. The element indium has an atomic mass of 114.8g and atomic number of 49. Naturally occuring indium contains a mixture of indium-112 and indium-115, respectively, in an atomic ratio of a) 6/94 b) 25/75 c) 50/50 d) 75/25 e) 94/6 2. Body temperature is about 308K. On a cold day, what volume of air at 273K must a person with a lung capacity of 2.00L inhale to fill their lungs?

Answer: 1. a 6/94 2. V1/T1 = V2/T2 = Vi/273 = 2/308 = 2*273/308 = 1.773litres

Question: i need help with science homework? what are the words with the clues given: 1. atomic number 11 2. period 4; group 9 3. atomic number 53 4. atomic mass 178.49 5. electron configuration ends 6s2 (the 2 is small hovering beside the s) 6. atomic number 47 7. mass number 12 8. element with 39 protons in each atom's nucleus 9. element used in nuclear reactors and nuclear weapons 10. the lightest element (but very reactive to fire) 11. mass number 7 12. period 6; group 17 13. atomic number 100 14. electron configuration ends 4d10 (10 is small like the number 5) 15. element used in signs and lights 16. atomic mass 190.23 17. element needed for strong bones (found in milk and cheese) 18. period 3; group 16 19. element used often to make wires 20. the most expensive element (atomic number 98)

Answer: You should check the periodic table, the atomic number and atomic mass is on there. the atomic mass is the numbers below the element, and the atomic number is above the element. Heres a site to help you.

Question: periodic table (chemistry) questions! please help, 10 points to who answers.? 11. 23. What are the atomic number and the atomic mass of atoms containing 49 electrons, 49 protons, and 66 neutrons? atomic number atomic mass A. 66 115 B. 49 115 C. 49 66 D. 17 83 12. What are the atomic number and the atomic mass of atoms containing 6 electrons, 6 protons, and 6neutrons? atomic number atomic mass A. 6 12 B. 12 6 C. 6 6 D. 12 12 13. How many neutrons are present in an atom of fluorine that has a mass number of 19 and an atomic number of 9? A. 9 B. 10 C. 19 D. 28

Answer: Atomic number refers to the number of protons an atom of that element has. It's the number of protons which determine which element it is. Atomic mass refers to where the mass of the atom comes from, in other words, the number of protons plus the number of neutrons (since electrons have negligible mass). 11 B. 49 protons so atomic number is 49; 49 p + 66 n = 115 for at. mass 12 A. 6 protons so at. no. is 6; 6 p + 6n = 12 for at. mass 13 B. Mass number is the same as atomic mass, so you're given that there are 9 protons and 19 (n+p), so there are 10 neutrons in this atom.

Question: Estimate the number of electrons capable of conducting an electrical charge in 470 cm^3 of silver. The density of silver is 10.49 x 10^6 g.m^-3 , and the atomic mass is 107.869 g.mol^-1. Only valence electrons are expected to conduct electrical charge. Please show all working. Help is appreciated. ><

Answer: Volume silver = 0.000470 m^3 Mass Silver = 0.000470 m^3 x 10.49 x 10^6 g/m^3 =4930.3 g Moles silver = 4930.3 g / 107.869 g/mol =45.7 Moles electrons = 45.7 number electrons = 45.7 x 6.02 x 10^23 =2.75 x 10^25

Question: Atomic Structure Questions? What is: The electronic configuration of an excited state of an oxygen atom? Electronic Configuration of elements Phosphorous and Copper in the ground state Explain why Aluminum is likely to belong to which group in the Periodic Table. Nucleon Number: 74 76 77 78 80 82 % abundance : 0.9 9.0 7.6 23.5 49.8 9.2 (aligned accordingly to top). 1. Calculate relative atomic mass of selenium to three sf. 2. Calculate number of neutrons in the most abundant isotope of selenium and write down the electronic configuration of the selenium atom. Whoever who answers correctly will have ten points. Please Please? :D

Answer: oxygen 2,8 excited state gains 2 electrons 1s2 ,2s2,2p6 copper 2.8.18.1 1s2,2s2,2p6,3s2,3p6,4s1,3d10 phosphorous,2,8,5 1s2,2s2,2p6,3s2.3p3 aluminium is in group 3 because it has 3 electrons in the outer shell( no. of electrons in the outer shell represents the group no.) RAM OF SELENIUM=(74x0.9+76x9+77x7.6+78x23.5+80x… =79.1 80 is 49.8 percent abundant the (most abundant) 80(mass of protons and neutrons)-34(mass of neutrons)=46 neutrons selenium 2.8.18,6 1s2,2s2,2p6,3s2,3p6,4s2,3d10,4p4

Question: balance these nuclear equations? 136 I (iodine) 53 133 Sb 51 117 In 49 andddddd what does a gamma ray represent? is it a particle? are there any changes in mass or atomic number when a nucleus produces only a gamma ray?

Answer: For the first part... do you want the decay pathways for those isotopes? if so...which ones? Alpha, Beta, or Gamma? I'll just give you the nuclear decay pathways for each one for each type. Alpha Decay - 136 53 I ----> 132 51Sb+ 4 2 He Beta Decay - 136 53 I----> 136 54 Xe+ 0 -1 e + v Gamma Decay - 136 53 I* -----> 136 53 I + g Alpha - 133 51 Sb -----> 129 49 In+ 4 2 He Beta - 133 51 Sb ----> 133 52 Te+0 -1 e + v Gamma - 133 51 Sb*-----> 133 51 Sb + g Alpha - 117 49 In -----> 113 47 Ag+ 4 2 He Beta - 117 49 In -----> 117 50 Sn+ 0 -1 e + v Gamma - 117 49 In* -----> 117 49 In+ g Idk if that's what your looking for but I gave it my best guess. For the second part...a gamma ray is basically a gamma particle. It is the strongest particle emitted from any type of decay. It is from gamma decay. It has been found that the mass of the decaying particle on the left side of the equation is less than the mass of the other side with the decay products. That "lost mass" is basically mainly conversion into kinetic energy.

Question: multiple choice anyone? 1.This is not a characteristic of a neutron. a.Contributes to the atom?s atomic number b.Contributes to the atom?s atomic mass c.Is located in the nucleus of the atom d.Has no electrical charge 2.An atom has 16 protons, 17 neutrons and 16 electrons. The atomic mass of this atom is: a.49 b.32 c.33 d.16 3.In a dehydration synthesis reaction: a.hydrogen and oxygen are removed from the reactants b.water is added to the reactants c.water is broken down into hydrogen and oxygen d.both a and c 4.In a hydrolysis reaction: a.water is a product b.water is a reactant c.water is broken down into hydrogen and oxygen d.the product is larger than either reactant 5.A solution with a pH of 6: a.is an acid b.is a base c.has 10 times more H+ ions than a solution with a pH of 5 d.both a and c above 5.The following is a disaccharide: a.glucose b.sucrose c.starch d.glycogen 6.This lipid can be found in the cell membrane: a.triglycerides b.phospholipids c.cholesterol d.both b and c above 7.Which of the following is not true of enzymes? a.They function on the lock and key model b.They are functional proteins c.They are catalysts d.All of the above are true of enzymes 8.This molecule is found in RNA but not DNA: a.guanine b.thymine c.uracil d.adenine 9.Matter can be defined as anything that occupies space and has mass. True False 10.Neutrons have no electrical charge. True False 11.The first energy level of an atom is closest to the nucleus and is the lowest energy level. True False 12.In a dehydration synthesis reaction, water is always a product. True False 13.Bases produce an excess of OH- ions. True False 14.A solution with a pH of 3 has 10 times more H+ ions than a solution with a pH of 4. True False

Answer: Hi Smiley; Your question is posted in the wrong area. You're asking a science question, and you've posted it in psychology.