1. chemistry

    what element has four energy levels and two electrons on its outer shell
  2. chemistry

    which element in period 4 has four electrons in its electron-dot structure ?
  3. chemistry

    what is the atomic number of an atom X which has 14 protons 14 electrons and 12 neutrons? 2 14 12 26
  4. chemistry

    What mass of electrons would be required to just neutralize the charge of 1.4 of protons?
  5. chemistry

    how do u set up the lewis structure for H30+? i know the available electrons is 3 but it has a +1 so it makes ir 2??
  6. chemistry

    Give the orbital designations of electrons with the following quantum numbers" (a) n = 3, l = 0, m1=0 (b) n=2, l=1, ml=-1 (c) n=4, l=3, ml=-2 (d) n=4, l=2, ml=0
  7. chemistry please help

    How many core electrons are there in a ground state phosphorus atom?
  8. College Chemistry

    How many electrons in an atom can have each of the following quantum number or sublevel designations? (a)n=2; l=1; m=0 (b)5s (c)n=4; l=1
  9. science

    How many protons, neutrons, and electrons does a neutral atom of calcium have?
  10. chemistry

    How many core electrons are there in a ground state phosphorus atom?
  11. Physical sciences

    The ruler now make contact with the neutral sphere.what happens to electrons?
  12. Chemistry

    The Maximum number of electrons that may occupy the third electron shell is A)2 B)8 C)10 D) 18
  13. Science

    An oxygen ion has 8 protons and 6 electrons. What is its charge in coulombs?
  14. chemistry

    Of the metals Pb, Mg, Au, and Na, which will not spontaneously donate electrons to copper in solution?
  15. Chemistry (electron transfer)

    Li^+(aq) + Zn(s) → Li(s) + Zn^2+(aq) How many electrons are transferred in the balanced equation? I came up with an answer of 2, is this correct?
  16. Chemistry

    how many electrons take part in redox reaction: Cl2 -> ClO3^-
  17. Science

    What must happen to the electrons in a material to create an electric current?
  18. chemistry

    How many electrons does the Au+ ion have ? Enter an integer below without any letters or symbols.
  19. science

    what types of are formed when atoms share electrons unequally
  20. Chemistry

    What are the 3 rule the govern the filling of atomic orbitals by electrons?
  21. chemistry

    How many degenerate orbitals are needed in CIF5 to contain seven electrons with five of them unpaired?
  22. CHEMISTRY

    How many electrons does the p-orbital of a methyl radical carbon CH3^. contain?
  23. Chemistry

    What mass of protons would be required to just neutralize the charge of 1.5 g of electrons?
  24. chemistry

    how can you tell how many valence electrons family 3 (transition metals) have? im confused about this.
  25. Chemistry

    How many unpaired electrons are in the electron structure of 24 Cr, [Ar]4s1 3d5
  26. Chemistry

    How many electrons would be required to fill the following sublevels? *3s *4s *3d *4d *3p *2d *3f *4d Choices are as follows A. 2 B 6 C 10 D 14 E There is no such orbital
  27. General chemistry

    What mass of electrons would be required to just neutralize the charge of 2.7 of protons?
  28. Chemistry

    How many electrons would be required to fill the following sublevels? This is what I got *3s = A *4s = A *3d = C *4d =C *3p =B *2d= E *3f =E *4d =C Choices are as follows A. 2 B 6 C 10 D 14 E There is no such orbital
  29. chemistry

    how many electrons are shared by two atoms that form a triple bond?
  30. chemistry

    what happens to the loosely held electrons when each ion is heated in the flame
  31. Science

    Compared to the number of protons how many electrons does the carbonate ion have
  32. science

    What are the seven energy levels and tell the maximum number of electrons that can fit in each.
  33. chemistry

    what happens to the loosely held electrons when each ion is heated in the flame
  34. bio

    Relate how the arrangement of electrons determines an element’s reactivity
  35. Science

    What laboratory instrument utilized the wave nature of electrons?
  36. science

    how can the periodic table help you determine the number of valence electrons?
  37. physics

    if a neutral object lost 2 electrons, what would it's charge be? it would be positive right?
  38. Chem

    What mass of protons would be required to just neutralize the charge of 3.5 of electrons?
  39. Physics

    In the photoelectric effect, what determines the number of ejected electrons?
  40. Science

    What happens to electrons in any charging process? Give an example of something charged by induction?
  41. chemistry

    Can you make a compound and show the electrons for magnesium and sulfur
  42. SCIENCE?CHEMISTRY***

    an 56 Fe 2+ particle has how many protons neutrons amd electrons??? 56 2+ Fe Thanks Andy
  43. chemistry

    What mass of protons would be required to just neutralize the charge of 1.1 g of electrons?
  44. science

    Why are the shells in which electrons revolve called energy levels
  45. Chem

    What mass of protons would be required to just neutralize the charge of 3.5 of electrons?
  46. Chemistry

    If an element has 12 protons and 17 neutrons, how many electrons does it have? I think the answers twelve but I'm not sure?
  47. Science

    How are valence electrons involved in the formation of a covalent bond?
  48. physics

    How many electrons pass through a lamp in 3 minutes.If the current is 300 ma?
  49. english

    In each of the following sentences, correct any word that requires a capitalization. 1. The lawyer’s office is located on North Pleasant Street. 2. My uncle lives farther West than grandmother. 3. I’d like to move to the South by next summer. 4. The
  50. physics

    A boat heads directly west across a river at 8.0 m/s while the river flows directly north at 2.0 m/s. Find VR.
  51. eng

    the primary purpose to al gore's an inconvenient truth is a. to inform the readers that there is environmental hazard in burning fossil fuels b. to entertain readers with stories from his college days and his professor's quotations c. to persuade the
  52. Chemistry

    "Is the following species a dipole?" NH2Cl I have drawn out the lewis dot structure of the molecule and the electronegativy values I have are N- 3.0 Cl- 3.0 H- 2.1 I know that the electronegativity difference between N and Cl is 0 and the bond is non
  53. Science

    plz any one these are some mcqs i am preparing for a test i m not sure with the answers of these mcqs this is not a homework not an online course exam so feel free to answer these thankx MCQS 01. Changes of equal magnitude are separated by some distance.
  54. Physics

    plz any one these are some mcqs i am preparing for a test i m not sure with the answers of these mcqs this is not a homework not an online course exam so feel free to answer these thankx MCQS 01. Changes of equal magnitude are separated by some distance.
  55. science

    plz any one these are some mcqs i am preparing for a test i m not sure with the answers of these mcqs this is not a homework not an online course exam so feel free to answer these thankx MCQS 01. Changes of equal magnitude are separated by some distance.
  56. science

    plz any one these are some mcqs i am preparing for a test i m not sure with the answers of these mcqs this is not a homework not an online course exam so feel free to answer these thankx MCQS 01. Changes of equal magnitude are separated by some distance.
  57. Physics

    A passenger walks from one side of a ferry to the other as it approaches a dock. If the passenger's velocity is 1.50 m/s due north relative to the ferry, and 4.50 m/s at an angle of 30.0* west of north relative to the water, what are the direction and
  58. physics

    to a man walking with a velocity of 3km/h due east the wind appears to blow north .but when he increases the speed to 7km/h due east the wind apeears to blow from north east .what is the actual velocity of the wind?
  59. physics

    A passenger walks from one side of a ferry to the other as it approaches a dock. If the passenger's velocity is 1.70 m/s due north relative to the ferry, and 4.5 m/s at an angle of 34.0° west of north relative to the water, what are the direction and
  60. Phizzics....

    The Canadian microsatellite MOST (Microvariability and Oscillations of Stars) has a mass of just 52 kg. It travels in an almost circular orbit at an average altitude of 820 km above Earth’s surface. a) Calculate the gravitational force between Earth and
  61. Physics

    I need major help with this please!!! On a safari, a team of naturalists sets out toward a research station located 6.9 km away in a direction 42° north of east. After traveling in a straight line for 2.1 km, they stop and discover that they have been
  62. analytic geometry

    1. Find the longest and shortest distance from (10, 7) to the circle x^2 + y^2-4x-2y-20=0 2. From the start, a man runs 4km towards north, 3 km towards east and takes a rest. Draw the line from starring point to resting point and line from resting point to
  63. american history

    Which of the following statements is true of the Gulf of Tonkin affair? A. Congress was divided and only reluctantly passed the Gulf of Tonkin Resolution. B. The destroyer Maddox was sunk by North Vietnamese gunboats. C. Johnson approved covert amphibious
  64. american history

    which of the following statements is true of the Gulf of Tonkin affair? a. Johnson approved covert amphibious raid on the north Vietnam B. congress was divided and only reluctantly passed the gulf of Tonkin resolution c. the destroyer Maddox was sunk by
  65. math

    A, B, C are three points on a horizontal plane, where A is due south of B. The bearing of C from A is 060 degrees. At B, there is a vertical mast BD. The angles of elevation of its top D from A and C are 25 degrees and 20 degrees respectively. Find the
  66. Geography

    If you traveled from 40 degrees North 80 degrees West to 35 degrees North 105 degrees W, in which direction would you have traveled?
  67. AP Physics B

    A 1010 kg geosynchronous satellite orbits a planet similar to Earth at a radius 1.97 × 105 km from the planet’s center. Its angular speed at this radius is the same as the rotational speed of the Earth, and so they appear stationary in the sky. That is,
  68. Physics

    Please help..... When something is thrown over a large distance (on earth ) what new factor comes into play? 1- The decrease in gravity over long distance 2- The increase in gravity over long distance 3- The tendency of thrown objects to fall to the ground
  69. Math

    The ocean covers about 71% of the Earth's surface. If the total surface area of the Earth is about 510 million square kilometers, how many square kilometers are covered by the ocean? 362.10
  70. physics

    A kayaker paddles at 4.0 m/s in a direction 30° south of west. He then turns and paddles at 3.7 m/s in a direction 20° west of south. I know the formulas but having trouble figuring out the degree of angle. Ax=4(cos30)= 3.4641 Ay=4(sin30)= 2
  71. Science

    the force of gravity on jupiter is much stronger than the force of gravity on earth. which of the following explains why this is true. A. Jupiter's orbit is farther away from the Sun and Earths orbit B. Jupiter has more mass than Earth C. Jupiter's orbit
  72. Astronomy

    Only one side of the moon is visible from Earth because... A. the moon does not rotate on its axis. B. the moon does not revolve around Earth. C. the moon rotates faster than it revolves. D. the moon revolves once and rotates once in the same period of
  73. math

    The ratio of an objects weight on earth to its weight on Neptune is 5:7. How much would a person who weighs 150 pounds on earth weigh on Neptune? A.210 pounds B.750 pounds c.107 1/7 pounds D.170 pounds
  74. Soc. Studies-Ms. Sue

    What was the first territory to shed blood in a civil war over slavery? A.Texas B.Kansas C.Missouri D.South Carolina I know there was blood shed in Kansas-but there is info that South Carolina was the first territory that had blood shed??? Can you help me?
  75. physics

    Three deer, A, B, and C, are grazing in a field. Deer B is located 61.1 m from deer A at an angle of 50.9° north of west. Deer C is located 78.4° north of east relative to deer A. The distance between deer B and C is 92.2 m. What is the distance between
  76. physics

    Three deer, A, B, and C, are grazing in a field. Deer B is located 63.4 m from deer A at an angle of 50.8 ° north of west. Deer C is located 76.7 ° north of east relative to deer A. The distance between deer B and C is 96.7 m. What is the distance
  77. physics

    Three deer, A, B, and C, are grazing in a field. Deer B is located 61.0 m from deer A at an angle of 54.1 ° north of west. Deer C is located 79.8 ° north of east relative to deer A. The distance between deer B and C is 98.1 m. What is the distance
  78. math

    The well is dug 14m deep. Its radius is 2m. The earth dug out is evenly spread out on a rectangular field of dimensions 10m*4m. Find the height of the platform raised.
  79. math

    a well of diameter 3 m is dug 14 m deep . the earth taken out of it has beem spread evenly all around of it in the shape of circular ring of width 4 m to form embankment. find the height of embankment .
  80. College Algebra

    The population of the Earth is approximately 6 billion people and is growing at an annual rate of 1.9%. Assuming a Malthusian growth model, find the world population in 44 years.
  81. math

    A 40m deep well with radius 3.5m is dug and the earth taken out is evenly spread to form a plat form of dimension 28m by 22m. Find the height of the platform.
  82. Physics

    How do you find the ratio of the new/ old world periods of a pendulum if the pendulum wee transported from earth to the moon, where the acceleration due to gravity is 1.63m/s^2? Im not sure if we use 9.8 at all, I think I'm supposed to use T=2 pi sqrtL/g.
  83. Math

    The population of the Earth is approximately 6 billion people and is growing at an annual rate of 1.9%. Assuming a Malthusian growth model, find the world population in 42 years
  84. science

    the best explanation of why the Moon appears to change shape throughout the month is •from Earth's perspective, we see varying amounts of the illuminated part of the Moon. • the Moon is revolving around the Earth** • from a bird's eye view, the Moon
  85. phys

    An astronaut drops an object from rest (relative to the planet) on a planet alpha (having the same radius as of earth) from an altitude of one radius above the surface. When the object hits the surface its speed is 3.98 times what it would be if the same
  86. Science 2

    One light year is about 9 trillion kilometers. Arcturus is a star that is 37 light years from earth. If you are about 11 years old now , how old will you be when light that is leaving. Arcturus today reaches Earth ? How far, in kilometers, will it have
  87. math

    The scale for an earth model is 1:40000000. The diameter of the earth is 12,756.32km. a)What is the diameter of the model in cm? I got 31.9cm (just need help on part b!) b) If the model is cut in half, how many jars of paint would be needed to paint each
  88. 8th Grade Social Studies Unit test

    What is all the answers? please help 1. What significant affect did the Treaty of pairs, signed after the french and Indian War, have on France? a.France had to Withdraw to its empire in central and South America. b.France had to allow the British to claim
  89. U.S. History

    What challenges did the Radical Republicans face during the Reconstruction period? The Radical Republicans fought for political supremacy. They had two main goals: Break the power of wealthy planters who had long ruled the South. Ensure that freedman
  90. Physics

    Which of the following involves a non-zero net force? I. A hockey-puck sliding at a constant speed on ice. II. The earth revolving around the sun at a constant speed. III. An object falling near the surface of the earth. A) I only B) III only C) Both I and
  91. physics

    1. What is the acceleration on the Earth? Remember the equation for an object that starts at rest is this: d = 1/2at2 ( this is an experiment for droping a ball from a 6 meter hight and seeing how long it takes to get to the floor from 6 meters, it took
  92. history

    1. The Filipino insurrection led by the Aquinaldo was the result of a. the senate vote ratyfing the treaty of paris ending the spanish american war b. the extension of american military occupation of manila to the entire archipelago 2. The american
  93. college algebra

    A freight rain leaves a station and travels north at a constant rate of 60 mph. One hour later a passenger train leaves the same station traveling north on a parallel track at 80 mph. How long will it take for the passenger train to draw even with the
  94. Biology

    These are true and false questions and I want to make sure that I got them right. 1. A water molecule is held together by two single polar covalent bonds. False 2. Because oxygen has a greater electronegativity than hydrogen, water molecules are polar with
  95. physics

    On a safari, a team of naturalists sets out toward a research station located 5.54 km away in a direction 47.9 ° north of east. After traveling in a straight line for 1.29 km, they stop and discover that they have been traveling 24.6 ° north of east,
  96. Chemistry

    1) How does the atomic radius change from left to right across a period in the periodic table? A) It tends to decrease*** B)It tends to increase C) It first increases, then decreases D) It first decreases, then increases 2) What is the charge of a cation?
  97. Chemistry

    1) How does the atomic radius change from left to right across a period in the periodic table? A) It tends to decrease*** B)It tends to increase C) It first increases, then decreases D) It first decreases, then increases 2) What is the charge of a cation?
  98. physics

    Two satellite are monitored as they orbite the earth,satellites Y is foure times as far from the earth's centere as is satellite X. if the period of revolution of satellite X is T. What is the period of revolution of Y?
  99. earth

    planet is in circular orbit around the Sun. Its distance from the Sun is 2.9 times the average distance of Earth from the Sun. What is the period of this planet, in Earth years?
  100. math

    Below are the median prices of homes sold in 2009, by region of the country. South 158,300 Northeast 248,800 Midwest 139,500 West 243,200 U.S. 180,100 The median selling price of a home in the South was approximately what fraction of the median selling