1. science

    An atom of sodium-23 (atomic number = 11) has a positive charge of +1. Given this information, how many electrons does it have? How many protons and neutrons does this atom have?

    asked by anon on March 9, 2014
  2. Atomic Model/Science

    A particular neutral uranium atom has 92 protons,143 neutrons, and an atomic mass of 235. How many electrons does the atom have?

    asked by Mileena on January 11, 2014
  3. chemistry

    CoSO4 + KI + KIO3 + H2O  Co(OH)2 + K2SO4 + I2 2KI yield I2 + 2e 2KIO2 10e yield I2 are there 10 electrons being transferred or just 5 only

    asked by eng on June 7, 2010
  4. Science

    In an atom, electrons ____. are located in the nucleus are paired with neutrons are located in the electron cloud are always in the same place

    asked by Raelyn on March 7, 2013
  5. chemistry

    The electron configuration of the outermost electrons of the halogen group is: a)ns2np7 b)ns1 c)ns2np5 d)ns2np6(n-1)d7 e)ns2np6

    asked by lavonne on November 9, 2010
  6. AP Chemistry

    The principal quantum number of the electrons that are lost when tungsten forms a cation is ? Tungsten is a transition metal.

    asked by koolchem on January 13, 2013
  7. Physics

    If enough energy were supplied to a diamond would that allow some of its electrons to transition to a higher energy band and therefore conduct electricity? Just curious.

    asked by Anon on May 15, 2018
  8. physics

    How many electrons pass through a wire in 5 minutes, if the current through a wire is 400 mA

    asked by satinder on June 26, 2017
  9. chemistry

    A certain element forms an ion with 54 electrons and a charge of +2. Identify the element.

    asked by Mely on September 5, 2010
  10. Physics

    2.0x10^13 electrons flow through a transistor in 1.0ms. What is the current through the transistor?

    asked by Anthony on February 17, 2010
  11. Physics

    If 0.01% of electrons are removed from 18 gm water, then calculate the charge produced in the water.

    asked by Raj on December 2, 2016
  12. chemistry

    When you touch an object, does the electrons from your hand exchange photons with the object?

    asked by Anonymous on February 25, 2014
  13. chemistry

    in an element on the periodic table, which number tells you the how many electrons are in that element??

    asked by Jane on November 4, 2010
  14. please ..chem

    When you touch an object, does the electrons from your hand exchange photons with the object?

    asked by Anonymous on February 25, 2014
  15. physics

    How can you tell if moving electrons are being deflected by a magnetic field, an electric field, or both?

    asked by Lucy on April 27, 2009
  16. science

    A hydrogen atom has one proton, two neutrons, and no electrons. Is this atom an ion?

    asked by anon on March 9, 2014
  17. CHEMISTRY

    How many electrons are there in the p-orbital of a CH3 RADICAL (CH3.) I don't understand how it is 3.

    asked by Delli on November 25, 2007
  18. physics

    The charge carried by one electron is e = -1.6 × 10-19 C. The number of electrons necessary to produce a charge of -1.0 C is:

    asked by shirly on March 13, 2014
  19. Chemistry

    How many electrons are there in the p-orbital of a CH3 RADICAL (CH3.) I don't understand how it is 3.

    asked by Delli on November 25, 2007
  20. physics

    A metal sphere has a charge of +6.4 C. What is the net charge after 4.1 x 1013 electrons have been placed on it?

    asked by scott on October 12, 2011
  21. chemistry

    The number of protons in an anion must always be ________ the number of electrons. the same as We can’t tell. less than greater than

    asked by Rachel on December 6, 2014
  22. Physics (please check)

    A 6.0kg block is released from rest 80m above the ground. When it has fallen 60m its kinetic energy is: I got 1200J as my answer mgh=(6.0*9.81* 60m)=3531.6 PE + KE= (ME + KE) 3531.6 + KE= (6.0*9.81*80m) KE= 1177.2 is that right A 6.0 Kg block is thrown up

    asked by susane on November 6, 2006
  23. mechanics

    please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of

    asked by incredible on January 1, 2016
  24. Physics

    a particle (C) of mass m = 0.2 kg can slide without friction on an inclined plane making an angle alfa (a) = 30 degrees with respect to the horizontal (aka ground) . (C) is launched at at an instant to=0 along a line Ox of greatest slope with an initial

    asked by PlzhelptheyllkillmeifIgetthiswrong on September 24, 2011
  25. statistics

    El Nino and the mosoon. The earth is interconnected. For example, it appears that El Nino, the periodic warming of the Pacific Ocean west of South America, affects that the monsoon rains that are essential for agriculture in India. Here are the monsoon

    asked by Anil on January 14, 2013
  26. physics

    1. what happens to the field strength when you halve the distance between two charges? 2. A positive charge of 3.5 uC is located in an electric field of intensity 3.00 N/C directed toward the south. Find the magnitude and the direction of the force on the

    asked by carol on May 30, 2012
  27. 5th grade

    The gravitational force on the moon is one -sixth of what it is on Earth. This means that on the Moon you would weigh one-sixth of what you weigh on Earth. How much would you weigh on the moon.

    asked by NayQuan on September 2, 2010
  28. Physics

    If the moon were twice as massive, would the attractive force of Earth on the moon be twice as large? Yes No What about the attractive force of the moon on Earth? Yes No

    asked by Sharvani on October 25, 2012
  29. math

    I have a math problem. A Mars year is 1.88 Earth years. If you are 13 years old in Earth years, about how would you be in Mars in Mars years? Thanks

    asked by jared on January 27, 2010
  30. Algebra 1 Scientific Notation

    Isaac newtons theory of universal gravitation states that the equation F=G m^1m^2/r^2 can be used to calculate the amount of gravitational forces in newtons between 2 point masses (m^1) and (m^2) separated by a distance (r). G is a constant equal to

    asked by Austin on September 27, 2011
  31. Physics

    In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.20 104-m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the

    asked by Anonymous on April 16, 2013
  32. Physics

    In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.20 104-m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the

    asked by Don on April 8, 2013
  33. Physics

    An electron in a television CRT moves toward the front of the tube with a speed of 7.5x10^6 m/s. A magnetic field of 0.04T (on a 50 degrees angle) causes the electrons to accelerate. Determine the acceleration

    asked by HELP on May 12, 2013
  34. chemistry

    how many protons and nuetrons are contained in the nucleus of each of the following atoms? assuming each atom is uncharged, how many electrons are present? a. 235/92U b. 13/6C c. 57/26Fe d. 208/82Pb e. 86/37Rb f. 41/20Ca

    asked by Corey on September 21, 2009
  35. Chemistry

    In a closed container 1L of chlorine reacts with 1L of nitrogen and 1L of hydrogen. I need to give lewis structure, vsepr, box notation for valence electrons etc. (i know how to do this) But I'm doubting on what the reaction equation would be.

    asked by Nicolas on January 15, 2016
  36. physics

    As part of a sinister plot, I connect a piece of high-purity GaAs 1 cm long to a 9 V battery, at room temperature. What is the resulting drift velocity of the electrons? Your answer should be in cm/s

    asked by Henry III on December 21, 2013
  37. U,S History

    What would George Wallace do if he were alive during Reconstruction of the South?

    asked by Alex on September 20, 2009
  38. Social Studies

    in which of the following ways are japan and south korea similar

    asked by Anonymous on March 16, 2016
  39. history

    Which of the following describes changes to the industry in South Carolina during the 1800s?  (

    asked by Anonymous on January 26, 2015
  40. Geography

    What are two South American countries with no known oil reservers?

    asked by elizabeth on November 15, 2006
  41. Social Studies

    Although most of South America lies within the tropical latitudes,

    asked by Anonymous on May 11, 2010
  42. ss

    What impact do monsoon winds most have on south asia

    asked by Syd on May 13, 2015
  43. social studies

    why did the people of the south feel that they needed slaves

    asked by kyara on November 20, 2009
  44. Sociology

    What if anything do these reverse migrants lose by returning to the south?

    asked by Paula on August 4, 2009
  45. geography

    The Island of Crete lies SOUTH of which Sea?

    asked by connxus kid on November 7, 2017
  46. business

    Give an example of a monopoly found in South Africa

    asked by Faith on October 27, 2010
  47. Science

    Why do most plants flower later in Scotland than they do in the south of England?

    asked by Anonymous on September 13, 2007
  48. geography

    what river flows south Cincinnati ohio

    asked by emily on April 17, 2017
  49. math

    Shopping centers X, Y and Z are such that Y is 12 km south of X and Z is 15 km from X. Z is on a bearing of 330° from Y.

    asked by kudu on February 11, 2015
  50. Science

    Hurry!!!!!!!!!!!!!!!!!!!!!!!!!!!! Which of the following is a speed, not a velocity? A. 35 m/s east B. –35 m/s C. 35 m/s D. 35 m/s south

    asked by Layla on December 4, 2012
  51. math

    Shopping centers X, Y and Z are such that Y is 12 km south of X and Z is 15 km from X. Z is on a bearing of 330° from Y.

    asked by kud on April 15, 2018
  52. social studies

    why did john kennedy become unpopular in south carolina

    asked by ciara on May 28, 2015
  53. economics

    exchage rate in south africa within 3 weeks

    asked by lesego on May 16, 2013
  54. History

    why was the south in favor of the mexican american war ?

    asked by LuLu on April 19, 2008
  55. social studies

    Into what ocean do most of South America's rivers flow?

    asked by kayla on November 2, 2010
  56. history 2

    what are some events that led to the collapse of reconstruction in the south?

    asked by jju on September 28, 2007
  57. Social Study'S

    How did the demand for cotton help shape the economy for the south?

    asked by Bongladite on January 28, 2016
  58. english

    Essy topic why i like living in south africa

    asked by Itumeleng on February 6, 2013
  59. History

    Who financed the Middle, the South and the New England colonies?

    asked by Lea on October 14, 2013
  60. social studies

    why is the south in more danger from hurricanes than the Midwest or the Northeast?

    asked by tony on October 24, 2010
  61. social studies

    Name two states that extend futher south than louisiana

    asked by Alex on September 2, 2010
  62. world Geo

    Name the South American country with the capital La Paz.

    asked by Carly on October 15, 2008
  63. life sciences business studies geography maths lit

    Why pick n pay is established in South Africa?

    asked by Bokamoso Lebeloane on June 3, 2017
  64. Geography

    About how far is southern tip of South America from the Equator?

    asked by Gianna on September 3, 2015
  65. Geography

    What's the furthest south in the U.S, or Canada that you can see the northern lights? Thanks

    asked by Maureen on March 14, 2009
  66. sociology

    What, if anything, do these reverse migrants lose by returning to the South?

    asked by tiffany on July 21, 2009
  67. Social Studies

    What was the impact the civil war had on South Carolina?

    asked by PLZZ HELP on May 18, 2018
  68. U.S History

    What where some complex conditions in the south during the recontruction era?

    asked by Attalah:) on November 9, 2010
  69. creative arts

    south African monologue for teenage girls

    asked by bongiwe gamede on April 21, 2015
  70. life orientation

    5 demographic structures of south Africa and their roles

    asked by mpho on February 13, 2017
  71. Social Studies

    What's the climate,landforms,and vegetation of south asia

    asked by phu on April 30, 2009
  72. Social Studies

    What's south asia art,architecture,and culture?

    asked by phu on April 30, 2009
  73. Life orientation

    How corruption and fraud impact in South Africa

    asked by Malope chegofatxo on April 23, 2016
  74. Science/ geography?

    What is the latitude range for Brazil, South America?

    asked by Mark on April 20, 2011
  75. history

    How did the south feel about the civil war reconstruction?

    asked by cierra on November 11, 2010
  76. life oriantation

    How did XENOPHOBIA effect south African government

    asked by phakiso mathabatha on May 11, 2016
  77. us history

    Who explored enough of South America to deem it a new continent?

    asked by april on April 1, 2015
  78. DESIGN TECHNOLOGY

    THINGS ABOUTH SOUTH AMERICA AND BRAZIL

    asked by FAITH on January 16, 2008
  79. World history

    1. Which of the following statements about Southern South America is true?

    asked by Anonymous on June 10, 2013
  80. Social Studies

    Would one of those websites explain how it impacts south africa?

    asked by Logan on May 20, 2008
  81. social studies

    How did the Aryans influence the culture of South Asia? Please help.

    asked by mary on December 3, 2014
  82. georgraphy

    which ocean would you cross to get from africa to south america

    asked by tyler on September 9, 2008
  83. us history

    the slaved-based economy in the south is created by?

    asked by maria on April 8, 2010
  84. South America

    What is the longitude and latitude of every piece of south America?

    asked by Kate on November 20, 2013
  85. Social Studies

    terrorism and the U.S War on Terror in South Aiaa

    asked by phu on April 30, 2009
  86. Geography

    Can you suggest some legends stories for South Sumatra?

    asked by Trisha on November 25, 2010
  87. Life orientation

    Identify any three causes of human trafficking in South Africa.

    asked by Anonymous on February 21, 2016
  88. SC state history

    what inspired most of south carolina's internal improvements?

    asked by unknown on November 29, 2016
  89. world geogrophy

    What river flows just south of cincinnati,Ohio?

    asked by Zoey on September 22, 2008
  90. questions

    Grammar, spelling, and facts can someone tell me about that in south america????

    asked by matt on May 1, 2014
  91. Questions

    can someone give me some facts about the environment in south america !?!?!?!?!?!

    asked by matt on May 1, 2014
  92. sociology

    What, if anything, do these reverse migrants lose by returning to the South?

    asked by joe on July 21, 2009
  93. sociology

    What, if anything, do these reverse migrants lose by returning to the South?

    asked by joe on July 21, 2009
  94. life orientation

    why do south africa still in corruption cases and how can that be stopped?

    asked by Lati on May 15, 2016
  95. Social Studies

    What's south asia art,architecture,and culture?

    asked by phu on April 30, 2009
  96. economics

    the south african governmrnt is not providing enough welfare

    asked by sinazo on May 18, 2014
  97. Ap physics 1

    The mass of a star in a galaxy far, far away, is 3.12 × 105 Earth masses, and the mean distance from the center of this star to the center of a planet with the same mass as our Earth is 2.46 × 108 km. Treating this planet and star as particles,with each

    asked by Jonathan on December 12, 2015
  98. Physics

    The mass of a star in a galaxy far, far away, is 2.13 × 105 Earth masses, and the mean distance from the center of this star to the center of a planet with the same mass as our Earth is 7.87 × 108 km. Treating this planet and star as particles, with each

    asked by Briana on January 17, 2016
  99. Environmental Science

    29. A common feature of thermal pollution and artificial eutrophication is that they both a. have sources that are difficult to identify and control b. cause large mats of algae to bloom in fresh water c. are a result of power plants and other industrial

    asked by y912f on January 27, 2010
  100. calculus

    newtons law of gravitation says that the magnitude F of the force exerted by a body of mass m on a bod of mass M is F=GmM/r^2 where G is the gravitational constant and r is the distance between the bodies. a)find dF/dr and explain its meaning. What does te

    asked by cassie on October 12, 2007