# Two electrons are placed; one at north pole and other at south pole of earth. Find the force between them. Given diameter of earth= 12800 km.

99,694 results, page 76
1. ## Social studies

How was the South Carolina constitution of 1868 different from previous state constitutions? A) women lost their right to own property B) representation was based on population alone.******* C) counties and distracts were organized Into parishes. D)

2. ## Physics

A man walks the distance of 8km in a direction of 20degrees east the walks another 6km in a direction 50degrees south east. Using vector diagrams find the magnitude and direction of the final displacement relative to the starting point.

asked by Tom on October 5, 2016
3. ## Social Studies

PLEASE CHECK THESE MS. SUE!!!!!!!!! 2. How did Captain John Smith's leadership save the settlement at Jamestown? a. He led the settlers in finding large quantities of gold and silver. b. He threatened to send any settler who refused to work away from

4. ## Physics

1.) The earth's radius is about 3956.52 mi. An object that has a mass of 20 kg is taken to a height of 160 km above the earth's surface. a. What is the mass of the object at this height? b. How much does the object weigh at this height?

asked by YESHA on August 22, 2014
5. ## Physics

The value of acceleration due to gravity (g) on a point 10,000 kilometers above sea level is about 1.49 meters/second2. How much will an object, which weighs 98 newtons on the surface of Earth, weigh on this point? The value of acceleration due to gravity

asked by Dave on July 4, 2012
6. ## IPC

The value of acceleration due to gravity (g) on a point 10,000 kilometers above sea level is about 1.49 meters/second2. How much will an object, which weighs 98 newtons on the surface of Earth, weigh on this point? The value of acceleration due to gravity

asked by sam on January 11, 2017
7. ## Physics

A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. (a) How high above Earth's surface is the satellite? [Answer in Km] (b) What is the satellite's acceleration? [Answer in m/s^2] I see this posted over and over again

asked by Brenda on September 29, 2012
8. ## physics question

Due to electric effects on the earth and in the atmosphere, there is an electric field near the earth's surface that points down. Assuming the electric field is uniform with a magnitude of 150 N/C, what charge would a 145g baseball need to float as though

asked by anonymous on February 22, 2018
9. ## physics

A satellite with a mass of ms = 7.00 × 103 kg is in a planet's equatorial plane in a circular "synchronous" orbit. This means that an observer at the equator will see the satellite being stationary overhead (see figure below). The planet has mass mp =

asked by Anonymous on October 17, 2013
10. ## maths

Iam stuck with this question.Please anyone help me. An airplane is flying at an altitude of 10,000m.The pilot sees two ships A and B.Ship A is due south of P and 22.5km away(in a direct line).Likewise ship B is due East and 40.8km from P. The height is

asked by Shane on April 7, 2013
11. ## Physics

A plane flies from base camp to lake A, a distance of 300 km at a direction of 20.0° north of east. After dropping off supplies, the plane flies to lake B, which is 210 km and 30.0° west of north from lake A. Graphically determine the distance and

asked by James on September 11, 2011
12. ## physics

At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.20%? At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 2.0%? At what height above Earth's

13. ## physics

At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.20%? At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 2.0%? At what height above Earth's

asked by lizbeth on March 10, 2016
14. ## check geo

The mountains on the western edge of south america are the: A)sierra madre b)rocky muntains c)andes d)western highlands my ans. Andes Latin America includesmiddle america the carribean and: A)mexico B)el salvador c)cuba D)south america my choose The

asked by henry on August 19, 2009
15. ## Chemistry

a) How many moles of atoms are in 7.00 g of 13C? Answer "0.538" mol 13C b) Based on your answer in Part A, calculate the number of atoms in this amount of 13C? Answer "3.24×10^23" 13C atom c) Based on your answer in Part B, how many electrons are in this

asked by katie on August 25, 2018
16. ## alegebra

1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on Earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: , where

asked by linda on September 13, 2010
17. ## physiscs

if the largest mass that you could lift on earth is 150 Kg. What is the largest mass you could lift on the moon. My work 150kg/10NKg x/1.6Nkg on earth on the moon =24 kg on the moon

asked by mickalia on September 6, 2014
18. ## Math - Algebra

If a man wewighs 41 newtons (N) on the surface of the earth while he weighs 81.5N on the surface of the moon, approximately how much lighter is he on the moon? What would be his weight on the surface of the earth if he weighs 90 N on the surface of the

asked by McKenna Louise on November 11, 2013
19. ## science

Mars is 48 million miles from earth. If a spaceship leaves Earth traveling toward Mars at 6 million miles per hour (m.p.h.). How long will it take the spaceship to arrive on Mars.

asked by joscelyn on October 19, 2010
20. ## Check My Work Social Studies, Ms. Sue, Reed, Please

1. Geographers use the five themes of geography to (2 points) study world history. organize information. study world music. measure locations.• 2. People invented flat maps because globes cannot show (2 points) names of continents. shapes of

asked by Sam on November 20, 2015
21. ## Social Studies, Ms. Sue, Reed, Check My Work

1. Geographers use the five themes of geography to (2 points) study world history. organize information. study world music. measure locations.• 2. People invented flat maps because globes cannot show (2 points) names of continents. shapes of continents.

asked by Sam on November 24, 2015
22. ## Geography (Ms. Sue)

1). Why is the Unites States a leader in agricultural products? 2). How has the economy of the South changed? 3). How has U.S. population shifted since the country began? My answers to these questions are the following: 1). The United States is a leader in

asked by Anonymous on September 13, 2013
23. ## help help help

The asteroid belt between Mars and Jupiter consists of many fragments (which some space scientists think came from a planet that once orbited the Sun but was destroyed). (a) If the center of mass of the asteroid belt is about 2 times farther from the Sun

asked by Teri D on October 10, 2006
24. ## physics

Two canoeists start paddling at the same time and head toward a small island in a lake. Canoeist 1 paddles with a speed of 1.40m/s at an angle of 45 degrees north of east. Canoeist 2 starts on the opposite shore of the lake, a distance of 1.5 km due east

asked by Marissa on September 24, 2014
25. ## English

1. I will be 17 years old next year. 2. I would be 17 years old next year. (Is #2 corect? When can we use 'would'?) 3. The river runs south. 4. The river flows south. (Are both OK?) 5. We have dinner when she arrives. 6. We will have dinner when she

asked by John on December 30, 2008
26. ## Physics

A rocket lifts off its launching pas with a vertical velocity of 20. m/s and a horizontal velocity of 60. m/s. What are the magnitude and direction of its resultant velocity? I drew the x and Y axis. 20 m/s on the Y axis and 30 m/s on the X axis. I know I

asked by Aya on October 14, 2014
27. ## Geometry

a. If a spherical Triangle on Earth has an excess of 30 degrees, find the area of this spherical triangle measured in square miles. b. If a spherical triangle on the moon has an excess of 30 degrees, find the area of this spherical triangle in sqare miles.

28. ## Math-geometry

. If a spherical Triangle on Earth has an excess of 30 degrees, find the area of this spherical triangle measured in square miles. b. If a spherical triangle on the moon has an excess of 30 degrees, find the area of this spherical triangle in sqare miles.

29. ## physics 12

If the Earth has a mass of 5.98*10^24 kg and orbits the Sun at a radius of 1.43*10^11 meters. Find the mass of the Sun. Thank you.

asked by roy on October 7, 2011
30. ## Explanation for calc. answer

I don't know how to answer this: A vector can be used to represent the path of a drill tip used to bore a deep mine shaft in Sudbury one quarter of the way to the centre of the Earth. Represent the vector using a directed line segment and Cartesian

asked by Derek for drwls! on July 7, 2008
31. ## URGENT: Calculus

I don't know how to answer this: A vector can be used to represent the path of a drill tip used to bore a deep mine shaft in Sudbury one quarter of the way to the centre of the Earth. Represent the vector using a directed line segment and Cartesian

asked by Derek for drwls! on July 6, 2008
32. ## Chemistry

One more problem with 1/2 reactions Pb(s) + PbO2(s) + 2H2SO4(aq)->2PbSO4(aq)+2H2O(l). How do you split them up with two Pb solids on the same side of the equation? Again you need to identify what is being reduced and what is being oxidised. I think I read

asked by amy on April 19, 2007
33. ## Science

How would a geologist identify an igneous rock as intrusive? A. An intrusive rock has coarse grains because it cooled more slowly on the surface of the earth. B. An intrusive rock has coarse grains because it cooled more slowly beneath the surface of the

asked by Anonymous on January 29, 2015
34. ## geography

Can you check my answers please? 1. Which continents do not cross the equator? North America, Europe, Australia, and Antarctica 2. What two parallels form the boundaries of the "tropics" or low latitudes? The 23 degree 50 N line and the 23 degree 50 S line

asked by Reed on October 21, 2012
35. ## Math

Two cars, car X and car Y , start moving from the same point P on a cross intersection. Car X is travelling east and car Y is travelling north. Some time later car X is 60 km east of point P and travelling in an easterly direction at 80 km/h and car Y is

asked by R on December 20, 2016
36. ## Art

1. I sit on the bank in my special place, 2. Feel the breeze that lifts my hair, 3. And watch the ripples run across the river. 4. It is so peaceful here. 5. Deep enough to justify a fishing pole, 6. Quiet enogh for my every thought, 7. The perfect place

asked by #FreeGucci on March 7, 2016
37. ## Social Studies(I need websites to do these please)

In 1965, Congress adopted the Voting Rights Act. Describe this act. In your description, explain what led Congress to pass the act, and describe at least two of the act's effects. How has the population of South Carolina changed over the past one hundred

asked by Mame on June 4, 2016
38. ## Algebra: 8th Grade; Equation Check

1) A private airplane leaves an airport and flies due south at 192 km/h. Two hours later a jet leaves at the same airport and flies due south at 960 km/h. When will the jet overtake the plane? t = time Equation: 192(t+3) = 960 2)An airplane flew for 4

asked by Meaghan on March 8, 2009
39. ## Science

The total amount of ice in the Greenland ice sheet is estimated to be 2.85 million cubic km. Assume the Earth's surface is 70% covered by ocean, and that the Earth's radius is 6300 km. How many meters would sea level rise if the entire Greenland ice sheet

asked by Bane Havoc on March 19, 2014
40. ## physics

On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hit the ball with a speed of 25 m/s at an angle 24 ∘

asked by raquel on October 2, 2015
41. ## Algebra

Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets,

asked by Vickie on March 1, 2012
42. ## physicss

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the

asked by MIKE on January 25, 2013
43. ## PHYSICS *_* HELP PLEASE

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 6 g. Find the reading of the

asked by MIKE on January 25, 2013

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the

asked by MIKE on January 25, 2013
45. ## geography

what would be some simple sanitation uses in australia? and you were usin tools made by yourself. the location of australia is in the area of west and south Gippsland. also including Wilsons Promontory, Victoria I'm not sure what you mean by "sanitation

asked by Philo on February 24, 2007
46. ## Biology

In 1999, Beverly Strassman published a study of menstrual cycling among the Dogon women in Mali. What did she find? Using her study results, what methods can you suggest reducing breast cancer in North American women who will have no children or very few

asked by Jason on May 8, 2009
47. ## trig

A plane is flying with an airspeed of 150 miles per hour and heading 155°. The wind currents are running at 25 miles per hour at 160° clockwise from due north. Use vectors to find the true course and ground speed of the plane.

asked by janice on November 16, 2012
48. ## Literacy

Please check my work, thank you. Question 1 – 4: Access the Library of Congress library Catalog. Then, find the information to answer the question. 1. What year was the oldest copy of Ralph Ellison’s Going to the Territory published? A. 1952 B. 1986 C.

asked by Jen on September 7, 2011
49. ## physics

The weight of an object on the moon is one-sixth of its weight on the Earth. The ratio of the kinetic energy of a body on the Earth moving with speed V to that of the same body moving with speed V on the moon is:

asked by Jazo on April 19, 2011
50. ## physics

Calculate the distance between the center of the earth and the center of the moon at which the gravitational force exerted by the earth on an object is equal in magnitude to the force exerted by the moon on the object.

asked by Cali on February 23, 2015
51. ## History

US History Crossword Puzzle 1. 9 letters; areas of Mississippi and Alabama characterized by black soil and excellent cotton-growing conditions 2. 13 letters; cotton-producing region of the southern United States How did the Free-Soil Party propose to

asked by Ashley on March 26, 2015
52. ## english

The lines "Some for the Glories of This World; and some/Sigh for the Prophet's Paradise ot come" in rubá'i #13 mean a. some people believe that heaven is to be found on earth b. somepeople seek God in this world while others believe God is in heaven c.

asked by y912f on July 6, 2009
53. ## College Chemistry

So i been trying to solve this question like for ever! so i hope you guys can help me , here is the question : the volume of a seawater on earth is about 330,000,000 mi3. if seawater is 3.5% sodium chloride by mass and has a density of 1.03g/mL, what is

asked by Tasneem on January 20, 2010
54. ## Math And Physics

Law of Gravitation- Find an expression for the magnitude of the initial velocity that a projectile must possess in order to leave the earth when air friction is neglected. The gravitational constant for g is, G = 6.67428*10^-11 m^3 Kg^-1 s^-2 Please answer

asked by Dwayne on May 1, 2011
55. ## MATH HELP

Law of Gravitation- Find an expression for the magnitude of the initial velocity that a projectile must possess in order to leave the earth when air friction is neglected. The gravitational constant for g is, G = 6.67428*10^-11 m^3 Kg^-1 s^-2 Please answer

asked by Dwayne on May 2, 2011
56. ## Math BOBPURSLEY HELP HELP HELP HELP

Law of Gravitation- Find an expression for the magnitude of the initial velocity that a projectile must possess in order to leave the earth when air friction is neglected. The gravitational constant for g is, G = 6.67428*10^-11 m^3 Kg^-1 s^-2 Please answer

asked by Dwayne on May 2, 2011
57. ## Science

It can be shown that for a uniform sphere the force of gravity at a point inside the sphere depends only on the mass closer to the center than that point. The net force of gravity due to points outside the radius of the point cancels. How far would you

asked by Natsi on October 2, 2009
58. ## Physics Problem 6.22

It can be shown that for a uniform sphere the force of gravity at a point inside the sphere depends only on the mass closer to the center than that point. The net force of gravity due to points outside the radius of the point cancels. How far would you

asked by Michael Moskvich on April 4, 2010
59. ## Socials

Colonies in the Wilderness 1814-1840 The Land Of Yesterday: (Im putting down paragraphs from my book to here as I want to shorten them in the end, and only gather the important key notes I need) The history of Canada has always been affected by its

asked by Sara on February 4, 2011
60. ## physics

In the Millikan oil drop experiment, an atomizer (a sprayer with a fine nozzle) is used to introduce many tiny droplets of oil between two oppositely charged parallel metal plates. Some of the droplets pick up one or more excess electrons. The charge on

asked by James on January 24, 2010
61. ## Pre Calc

A plane (A) heading south at 120 mph and a plane (B) heading west at 600 mph are rlying tword the same point at the same altitude. Plane A is 100 miles from the point where the flight patterns intersect and plane B is 550 miles from there. A) Find the

asked by Rebekah on May 7, 2013
62. ## Science

1.Which type of eclipse would you expect to see if the moon passes directly between Earth and the sun? -a solar eclipse -a lunar eclipse -a total lunar eclipse -a penumbra 2.Which of the following statements about a lunar eclipse is true? -A lunar eclipse

asked by Jasmine on January 15, 2014
63. ## Science

1.Which type of eclipse would you expect to see if the moon passes directly between Earth and the sun? -a solar eclipse -a lunar eclipse -a total lunar eclipse -a penumbra 2.Which of the following statements about a lunar eclipse is true? -A lunar eclipse

asked by YRN DJ on January 4, 2016
64. ## pre-calc

A ship travels 200km west from port and then 240km due south before it is disabled. Illustrate this in a vector diagram. Usa trigonometry to find the course that a rescue ship must take from port in order to reach the disabled ship. i don't know where to

asked by Devon on March 30, 2008
65. ## math

an agriculture field is rectangular, with dimensions 100m by 42m.a 20 m deep well of diameter 14 m is dug in a corner of the field and the earth taken out is spread evenly over the remaining part of the field.find the increase in the level of the field

asked by abel on May 17, 2016
66. ## PHYSICS

1. Why is an electric field considered to be a vector quantity? 2. Draw the electric field around an electric dipole of +1 µC and -1 µC 3. How many electrons have been removed from a positively charged object if it has a charge of 1.5 x 1011 C? 4. A

asked by Hayden on December 21, 2012
67. ## Physics

1.Halley's comet moves about the sun in an elliptical orbit with its closest approach to the sun being 0.59 A.U. and its furthest distance being 35 A.U. [1 Astronomical Unit (A.U.) is the Earth-Sun distance.] If the comet's speed at closest approach is 54

asked by Brianna on July 11, 2010
68. ## physics

It has been suggested, and not facetiously, that life might have originated on Mars and been carried to Earth when a meteor hit Mars and blasted pieces of rock (perhaps containing primitive life) free of the surface. Astronomers know that many Martian

asked by tom on February 2, 2016
69. ## History

Need help with study guide!! 1. What are two inventions/concepts that Eli Whitney is known for? 2. Why did New England become the center of the American Industrial Revolution? 3. What was a key element in developing a market economy in nineteenth century

asked by David on October 15, 2015
70. ## metreology

Wien’s radiation law says that the wavelength of most intense radiation (λmax) emitted by a blackbody is inversely proportional to the absolute temperature (T) of the object. The surface of the Sun radiates as a blackbodyat a temperature ofT=6000

asked by larry on December 22, 2015
71. ## Geography

51. How do the monsoons and the mountains influence the climate in South Asia? Include in your answer an analysis of how monsoons can be responsible for survival and hardship in this region. Seasonal shifts in the winds are called monsoons. In winter, the

asked by y912f on April 4, 2010
72. ## Pre Calc

You have recently been promoted and are now a senior pilot with BHS Exprress, providing courteous and timely service to countless cities across the Northeast. In order to arrive in New York City at the scheduled time, you know you must fly at a speed of

asked by Sarah on February 16, 2018
73. ## HISTORY

1. Which of the following describes the Puritans? (1 point) didn't have much success as planters made Sunbury into a thriving port came from the backcountry of Virginia came from Pennsylvania by way of North Carolina 2. Georgia’s slave code was modeled

asked by FAM I NEED HELP on September 16, 2016
74. ## Math

Ryan left the science museum and drove south. Gabriella left three hours later driving 42 km/h faster in an effort to catch up to him. After two hours Gabriella finally caught up. Find Ryan's average speed

asked by Anonymous on April 28, 2014
75. ## Physics - Help!!!

I want to be sure I'm using the right formula for this question: Calculate the electric force between 2 electrons that are 5.3 x 10^-11 m apart (electron charge = -1.6 x 10^-19 C) I'm using the equation for Coulomb's Law: F = K (q1 q2)/d^2 (-1.6 x

asked by Justin on June 1, 2012
76. ## physics

Suppose electrons enter a uniform electric field midway between two plates at an angle ¦È0 to the horizontal, as shown in the figure

asked by Anonymous on February 8, 2014
77. ## chem

Which of the following elements would you expect to gain electrons in chemical changes? (Select all that apply.) gold chromium zirconium nitrogen iodine

asked by Sara on September 21, 2010
78. ## physics

calculate the net charge on a substance consisting of a combination of 2.6e13 protons and 6.0e13 electrons. answer in units of C.

asked by Anonymous on April 6, 2011
79. ## Chemistry

As one descends group 6A of the periodic table, the number of valence electrons found in each element A. Increases B. Decreases C. Remains the same

asked by Jerome on December 7, 2010
80. ## Chemistry

As one descends group 6A of the periodic table, the number of valence electrons found in each element? A. Increases B. Decreases C. Remains the same

asked by Ivy on December 7, 2010
81. ## Chem 130

How do I do this? Using the symbol of the previous noble gas to indicate the core electrons, write the electron configuration for each of the following elements. (a) zirconium, Z = 40 (b) vanadium, Z = 23

asked by michelle on May 14, 2014
82. ## chemistry

calculate the number of protons, neutrons, and electrons in the sample of scandium that you weighed at 7.9 mass weight if it is 100% ^45Sc.

asked by GKMB on May 11, 2010
83. ## Chemistry

A single 4p orbital can hold how many electrons? i got 6 is that correct or no? Would conducting electricity be considered a physical or a chemical property of ZINC?

asked by Jack on September 10, 2010
84. ## physics

In one mole or 18 grams of water, the total negative charge of all the electrons is: a. zero because its electrically neutral. b. less than one C c. almost 100,000 C. d. almost one million C. e. none of these

asked by Anonymous on April 9, 2013
85. ## physic

if the beam current in a particular TV is 50 micro A and the charge on a single electron is 1.6x10^-19 C. how many electrons hit the face of the picture tube in one second?

asked by fatih on February 15, 2012
86. ## physics

The potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA. Then the number of electrons striking the target per second and speed at which they strike?

asked by sunil on April 7, 2011
87. ## Chemistry

As one descends group 6A of the periodic table, the number of valence electrons found in each element? A. Increases B. Decreases C. Remains the same

asked by Ivy on December 7, 2010
88. ## Science

How can atoms with fewer than 8 valence electrons fill their outermost energy level? (If you can, can you please help me use either sulfur or magnesium to explain the process please?) Thank You!

asked by Star :) on April 28, 2009
89. ## science

if electrons are caused to fall through a potential difference of 100000 volt,determine their final speed if they were initially at rest.

asked by akhilesh on March 12, 2014
90. ## physics

How strong an electric field is needed to accelerate electrons in a TV tube from rest to one-tenth the speed of light in a distance of 4.9 cm ?

asked by Debra on June 15, 2011
91. ## chemistry

1.How would you separate a mixture of salt, sawdust, and iron filings? 2. The Mg^2+ and Na^+ ions have ten electrons. Which has the smaller radius? Explain.

asked by Rebecca on January 13, 2009
92. ## Chemistry

Name the majority charge carrier in the doped material. Holes Electrons Electron-hole pairs The dopant ion

asked by selly on November 19, 2012
93. ## Chemistry

How do the number of electrons found in the element’s outer shell relate to their position in the period table? -- I have an idea, but I'm not sure how to verbalize it, can you please help? Thanks! :)

asked by Jordan on July 28, 2011
94. ## Chemistry

How do I calculate the wavelength of the emission line when electrons drop from the 4th to the 3rd energy level in the hydrogen atom?

asked by Lis on February 9, 2011
95. ## science

The ionization energies for the removal of the first electrons in Silicon 780,Phosphorous 1060,Sulphur 1005,Chlorine 1225.

asked by Chidinma on November 17, 2017
96. ## chemistry

Complete and balance the displayed half reaction in neutral aqueous solution taking into account the electrons. Mg(s) → Mg2+(aq)

asked by andy on June 2, 2010

The two-mile linear accelerator at Stanford University in California "appears" to be less than a meter long to the electrons that travel in it. Explain.

asked by Jason on May 9, 2012
98. ## science

what chemical characteric of a substance that allows it to oxidize rapidly Usually the material has one or two electrons in the outer shell and the ionization potential is low.

asked by nener on February 6, 2007
99. ## chemistry

How many valence electrons are shared, gained, or lost by each atom of the six compounds? • N2 • CCl4 • SiO2 • AlCl3 • CaCl2 • LiBr please help

asked by malia on August 31, 2017
100. ## chemistry

How many valence electrons are shared, gained, or lost by each atom of the six compounds? • N2 • CCl4 • SiO2 • AlCl3 • CaCl2 • LiBr