1. chemistry

    When an electron move from one level to another an amount of energy is dissipated. Give the equation that will enable you to calculate that amount of energy

    asked by mildred on April 2, 2018
  2. Math!!!

    Equation for - the crafts club made 102 wooden train cars. There are 6 cars to a set. How many sets were made?

    asked by Dianne G. on May 11, 2014
  3. chemistry

    theoretical yield of NaCl using 0.016 mols HCl with HCl + NaOH - NaCl + H2O as the equation for the reaction

    asked by Anonymous on May 1, 2011
  4. Algebra

    The equation x^2+px+q=0, q cannot be equal to 0, has two unequal roots such that the squares of the roots are the same as the two roots. Calculate the product pq. I think the obvious root would be one but the second roots i just can't figure out!

    asked by Ricky on October 20, 2011
  5. chemistry

    Given the following balanced chemical equation, if 15.4 g AgNO3 are reacted, how many moles of AgCl are produced? 2 AgNO3 + BaCl2 → 2 AgCl + Ba(NO3)2

    asked by anna on March 1, 2015
  6. Chem.. stoichiometry

    How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is: C + H2O → CO + H2 Is this equation balanced?

    asked by Jenna Woodruff on May 3, 2013
  7. math

    A cylinder pan has the dimensions shown below. A formula for the volume of a cylinder is v=Bh. Which equation best represents B, the area of the base of this pan. A.B= π (3 1/2)^2 B.B= π (7)^2 C.B=2 π (7) D.B= π (2 3/4)(14)

    asked by rororoyourboat on February 26, 2019
  8. Math

    How do you solve this equation; There are 128 7th graders at Mark's school, if there are 16 more girls than boys, how many 7th grade boys are there?

    asked by Bill on October 13, 2012
  9. math

    The equation: T= 2* pi* sqrt(2/3L/9.8) Solve for L. Please show the solution step by step. The square root is giving me trouble in my solution. Thanks for your help.

    asked by alice on January 1, 2014
  10. Int Algebra

    The difference of two numbers is 7. The sum of the numbers is -1. What are the numbers? I've come up with two equations: x-y=7 and x+y=-1 but don't know what to figure it out from there since there are no numbers on the left side of the equation to work

    asked by Rose Mata on January 26, 2007
  11. trig

    if alpha and beta are 2 different values of θ lying between 0 and 2π which satisfy the equation 6cosθ+8 sinθ=9 find the value of sin alpha + beta

    asked by usha on June 11, 2011
  12. Chemistry

    What is the pH of a 2.62 x 10^-1 HCN solution? The pKa for HCN = 9.212 I don't know whether to use the Henderson Hasselbalch Equation or just convert pKa to Ka and work it out that way.

    asked by Michael on May 25, 2010
  13. Chemistry

    Balance the following chemical equation. __Fe(OH)2 (s) + __H3PO4 (aq) -> __Fe3(PO4)2 (s) + __ H2O (l) Would it be 3 Fe(OH)2 (s) + 2 H3PO4 (aq) -> 1 Fe3(PO4)2 (s) + 6 H2O (l) ?

    asked by Anonymous on January 30, 2010
  14. Math (pre-celc 12)

    I'm not sure how to solve this equation algebraically: 38=20sin((2pi(t))/36)+22 I know the answer should be about 5.3 since I graphed it. I can get as far as removing 22 from the right and then removing 20 from the right by dividing by 20. To get

    asked by Jana on June 11, 2016
  15. Science grade 8

    Which chemical equation is balanced? 1. H20 H 2 + 20 2 2. 2H20 2H2 +0 2 3. 2H20 H2 + 20 2 4. H2O 2H2 + 20 2 Im super confused... But I think its 4?? Im probably wrong so please help?!?!

    asked by Amy on March 23, 2015
  16. chemistry

    How much heat is released when a mixture containing 12.6 g CS2 and 12.6 g Cl2 reacts by the following equation? CS2(g) + 3 Cl2(g) → S2Cl2(g) + CCl4(g) ΔH° = −230. kJ

    asked by caroline on October 29, 2010
  17. Algebra

    my question is:Suppose you want to add a sprinkler system, and the location of one section of the sprinkler system le can be described by the equation: y= -1/2x -4, this is what I got 4+y= -1/2x - 4 +4, 4y= 1/2x -1/2x; y=4 and x=0 making the answer (0,4).

    asked by A. W. on February 15, 2009
  18. math

    What is the principle of powers? Describe in your own words. When solving a radical equation, how do we use the principle of powers to eliminate radicals? Demonstrate with an example.

    asked by Allison on November 17, 2011
  19. Math

    How do I solve this? (2x^1/2) * (6x^2 - x^1/2) Here it is in words to make the equation clearer (two x to the one half power) multiplied by (6x squared minus x to the one half power)

    asked by Jackie on April 22, 2008
  20. Algebra

    Not understanding the question. Why a solution of a word problem should be checked using the original wording of the problem and not the equation written from the wording.

    asked by Cindy on February 2, 2011
  21. trig

    A population of wolves in a country is represented by the equation P(t)= 80(0.98)^t, where t is the number of years since 1998. predict the number in the population in the year.

    asked by lhencham on February 1, 2010
  22. MATH

    Can anyone please help me with this? Can anyone please build or generate at least five Pythagorean Triples using one of the many formulas available online. Then After building the triples, verify each of them in the Pythagorean Theorem equation. Thank you

    asked by John on August 19, 2011
  23. chemistry

    For a particular redox reaction NO is oxidized to NO3^– and Cu^2+ is reduced to Cu. Complete and balance the equation for this reaction in basic solution: NO + Cu^2+ --> NO3^- + Cu^+ help. thanks.

    asked by dr. bob rocks on December 4, 2012
  24. math

    Hi Dan, kindly provide detail equation how to arrived to your answer. 21 boys, 21 girls. 7:5 - 6 girsl is 21 boys to 15 girls [think -6]

    asked by tante on November 20, 2015
  25. math

    Dvds are priced at 2for $15. Garret wants to buy 5 DVD. What equation can be used to find s, the total price of garret DVD?

    asked by brianna on February 27, 2012
  26. algebra 1 :(

    The height of a triangle is 8m less than the base. the area is 10m^2. Find the height and base. I really need help on just turning this word problem into an equation!

    asked by nicole on December 11, 2007
  27. Perimeter of a triangle

    Perimeter of a triangle. The perimeter of the triangle shown in the accompanying figure is 12 meters. Determine the values of x, x + 1, and x + 2 by solving the equation x + (x + 1) + (x + 2) = 12.

    asked by Jone on December 18, 2009
  28. Chemistry

    net ionic equation of 3Cr(c2h3o2)2 +2(nh4)3(po4)--Cr3(po4)2+6Nh4(c2h3o2)with states

    asked by Kendall De on November 1, 2016
  29. Math

    A dog walker charges $10 to come to your house and then $2 per mile walked. She charged you $16. Which equation could you use to determine how far she walked your dog. Can you please help? Im thinking its 16+10=2m

    asked by JIskhaLover on May 5, 2017
  30. Algebra function problem, check/help?

    Set up a function for the following situation: The output of a function is 8 less than 3 times a number. B) Find the input when the output is 13? Would your equation look like: 8

    asked by Allyson on October 19, 2010
  31. Chemistry

    The combustion of methane can be described by the equation: CH4 (g) + 2 O2 (g) -> CO2 (g) +2H20 (g) If 22.0 mL of CO2 (g) were collected, what volume of H20 (g) also could be collected under the same conditions?

    asked by Dani on December 9, 2011
  32. Chemistry

    How much heat is released when a mixture containing 12.6 g CS2 and 13.2 g Cl2 reacts by the following equation? CS2(g) + 3 Cl2(g) → S2Cl2(g) + CCl4(g) ΔH° = −230. kJ

    asked by Lance on June 7, 2011
  33. chmistry

    For the following equation, how many grams of NO2 can be formed from 2.50 g of CuO mixed with 0.500 L of NO gas at 25 C and 1.12 atm. ? 2 CuO (s) + NO (g)  Cu2O (s) + NO2 (g

    asked by Anonymous on August 26, 2015
  34. Chemisty

    When the following molecular equation is balanced using the smallest possible integer coefficients, the values of these coefficients are: phosphorus (P4) (s) + chlorine (g)----> phosphorus trichloride (l)

    asked by Eliazbeth on February 7, 2012
  35. calculus

    Find the equation of a cubic function that gives you the surface area of the cans given a set volume. The set volume is 300ml

    asked by Emily on October 17, 2010
  36. algebra

    in equation x - 1/x ________ x + 1/x My answer key said the answer was x squared -1 _____________ squared + 1 I'm wandering why it wouldn't simply be x-1 ______ x+1

    asked by Mr Clugston on April 8, 2016
  37. science

    the basicity of tetraoxosulphate 6 acid is 2 explain the statement with an equation and show the reaction between tetraoxosulphate 6 acid with potassium hydroxide

    asked by boss on April 30, 2019
  38. math

    a soccer-ball was kicked off the top of the building and its height was monitored.regression equation is h= -4t^2+24.5t+146. what is the height of the building?

    asked by sumit on April 6, 2016
  39. Chemistry Help

    How many moles of butane do we need to produce 10 moles of CO2 by reaction with oxygen? I think the balanced equation is 2 C4H10 + 13 O2 -----> 8 CO2 + 10 H2O

    asked by Timofey on April 30, 2013
  40. Algebra 2 Honors- Ellipses REAL ONE

    for my homework problem i have the equation: (x^2/16) + (y^2/1) = 1 I need to find out the center, the vertices, co- vertices and the Foci. I have trouble knowing how to find them, so if you can please explain them. Thank you.

    asked by Stephanie on April 30, 2008
  41. algebra

    Shoe O Rama is having a 20 % off sale this friday. Which equation below shows how to find the sale price, s, as a function of the original price, p?

    asked by Marc on June 18, 2015
  42. math

    The equation 9c-5f+160=0 describes the relationship between temperature, C, in degrees Celsius, and temperature, F, in degrees Fahrenheit. b)graph this relation.

    asked by dylan on January 24, 2010
  43. algebra

    I am confused on how to determine if an equation/expression is a trinomial square. For example c^2(squared)-18c+81. I know that this is a trinomial square but I don't know why. Could someone please help me understand better

    asked by Sam on January 7, 2010
  44. AP Chemistry

    How many moles of butane do we need to produce 10 moles of CO2 by reaction with oxygen? I think the balanced equation is 2 C4H10 + 13 O2 -----> 8 CO2 + 10 H2O

    asked by Timofey on April 30, 2013
  45. Algebra

    For the given quadratic equation convert into vertex form, find the vertex, and find the value for x = 6. Show your work. y = -2x2 + 2x +2 -(1/2)y = x^2 - x - 1 (-1/2)y + 1 = x^2 - x (-1/2)y + 1 = (x - 1/2)^2 - 1/4 (-1/2)y = (x-1/2)^2 - 5/4 y = -2(x-1/2)^2

    asked by Alexa on February 16, 2016
  46. pre-algebra

    Solve the inequality- a/3>4 -2n 4 * 3 a>12 Do similar processes with the other inqualities. I hope this helps. Thanks for asking.

    asked by Sarah on March 7, 2007
  47. algebra

    What is the graph of one cycle of a sine curve with the given characteristics? Using the form y = a sin bθ, what is an equation for the sine curve? amplitude = 2, period =2 pi , and a < 0.

    asked by dallas on May 4, 2017
  48. Chemistry

    When an electron move from one level to another an amount of energy is dissipated. Give the equation that will enable you to calculate that amount of energy.

    asked by Nomis on March 27, 2018
  49. math

    Problem Page Translate this sentence into an equation. 96 is the product of Han's height and 6 . Use the variable h to represent Han's height.

    asked by Nan on March 16, 2016
  50. Calculus

    1. Prove that (f(x+h)-f(x-h))/2=f'(x) 2. Prove that any parabola sastifies the equation (f(x+h)-f(x-h))/2=f'(x) For the first question, I tried to solve it but there is an extra h tacked on to one side. I have no clue what to do for the second question.

    asked by Andre on February 1, 2016
  51. algebra

    What would be the discriminant for this equation: x^2-2x+12=0 How many solutions are there? I have that the discriminant is -44 and since the discriminant is negative, the square root of the discriminant is a pure imaginary number. Is this correct?

    asked by Becky on March 7, 2008
  52. Physics

    If a car drives off a 40 m high cliff with a horizontal velocity of 15 m/s, how far from the base of the cliff will the car strike the fround? Could someone help with the equation, please

    asked by JessieLynne on January 2, 2011
  53. math

    if alpha and beta are 2 different values of θ lying between 0 and 2π which satisfy the equation 6cosθ+8 sinθ=9 find the value of sin alpha + beta ...

    asked by c uppadhaya on August 11, 2011
  54. Pre-Cal

    Find all Real solutions of the Equation: (ENter as comma sparated answers, if there are no real solutions then just leave as NRS) x^(4/3)-9x^(2/3)+14=0 x=?

    asked by Dom on May 25, 2016
  55. Trigonometry

    Help trig question involving discriminant? a)Find the value of the discriminant. b)Use any method to find the real roots of the equation if they exist. 2x^2+7x=0

    asked by Tomtom on November 17, 2011
  56. advanced math

    If 0°

    asked by sophie on May 28, 2009
  57. math

    find the vertex,focus and equation of the direction of y=-1/16(x-6)^2+3 Y=1/2p(x-h)^2+k p=8 h=6 k=3 so I now got (6,3) when doing it over again. I now got so vertex is (6,3), focus is (6,7) and directrix = y=-1 Is these corrections now right? Thank you for

    asked by sara on October 21, 2018
  58. Algebra 2

    How are the real solutions of a quadratic equation related to the graph of the quadratic function? Please help? How do I make a real-world situation out of this?

    asked by Fading on November 13, 2016
  59. Math

    Evaluate the integral of 1/(1+sqrtx)^4 from [0,1] I started off letting u=1+sqrtx and du=1/2sqrtx, but then there is no 1/2sqrtx in the equation. What am I suppose to do next? The answer in the book is 1/6.

    asked by Dave on September 13, 2017
  60. Re: Algebra II

    How to solve Log (9x+5) - Log ((x^2)-1) = 1/2 16 16 (The 16 is from the logarithmic function : b) (y=log x) b Could anyone post the answer to this? 16 is supposed to be next to Log(16) but lower. This is for both the Logs in the equation.

    asked by Anonymous on May 18, 2010
  61. chem/stats

    Find the absolute error for the answer of the following equation: square root of 3.24 plus-minus 0.08 end root equal 1.80 plus-minus ?

    asked by Anonymous on January 19, 2015
  62. Chemistry

    sorry How many moles of exygen are needed to react with 1.6 moles of isopropyl alcohol, C3H7OH Equation is 2 C3H7OH + 9 02 -> 6 CO2 + 8 H20

    asked by dody on December 5, 2010
  63. algebra

    Can someone help me make an equation for a horizontal eIIipse with major axis thats 50 units and minor axis thats 20 units?? Thanks so much in advance!!!!! im stuck :^(

    asked by ellipse equation question??? on June 8, 2018
  64. Science

    Na subscript 2SO subscript 4 + CaCl subscript 2 produces CaSO subscript 4 + NaCl Please help me balance this equation and show your work

    asked by Katie on February 28, 2012
  65. pre calc

    Find all solutions of the equation 3sin^2 x -7sin x +2 = 0 in the interval [0,2pi). The answer is x_1= ?? and x_2= ?? with x_1

    asked by james on April 14, 2013
  66. Math-Algebra

    Given the table with values for A and r, answer the folowing: r 2 3 4 5 A 12.57 11.31 50.28 78.56 a. What equation represtnts the relationship of the values in the table above? b. Find the constant of variation. c. If r = 8, what would be A?

    asked by Marie Pierre on November 17, 2013
  67. Physics

    A 0.18 kg point mass moving on a frictionless horizontal surface is attached to a rubber band whose other end is fixed at point P. The rubber band exerts a force F = bx toward P, where x is the length of the rubber band and b is an unknown constant. The

    asked by Jessica on November 4, 2010
  68. character education

    How does self-knowledge help one live a moral life? knowing the normal reactions helps decide what is best knowing his or her precise moments of decision alerts a person to the most important time to consider his or her moral code self is the most

    asked by Bri on December 7, 2017
  69. Physics

    A model rocket is launched at 62 degrees above the horizontal with an initial speed of 28m/s. the rocket travels for 4.5s along its initial line of motion with a constant acceleration of 13 m/s^2. At this time, the engine of the rocket stops and the rocket

    asked by Bethany on September 21, 2016
  70. Don't understand this Geometry question

    Isosceles triangle XYZ is placed on a coordinate plane to be used for a coordinate proof. What should the coordinates of its vertices be? a. (-a,0), (0,0), (a,0) b. (0,0), (0,-a), (-a,0) c. (0,0), (0,a), (a,0) d. (0,0), (0,-a), (a,0) ??? 5 REASONS WHY

    asked by Ellie on August 28, 2006
  71. Physics

    Both start from rest, but experienced Stan leaves the starting line 1.00 s before Kathy. Assume Stan moves with a constant acceleration of 3.45 m/s2 and Kathy maintains an acceleration of 5.10 m/s2. (a) Find the time it takes Kathy to overtake Stan. (b)

    asked by john on October 18, 2010
  72. Physics

    Moe, Larry, and Curly stand in a line with a spacing of d = 1.40m . Larry is 3.00m in front of a pair of stereo speakers 0.800m apart, as shown in the figure(Figure 1) . The speakers produce a single-frequency tone, vibrating in phase with each other. What

    asked by Lhaedy on December 11, 2013
  73. math

    Given: segment AC and segment BD bisect each other at E prove: E is the midpoint of segment RS i don't know if you will be able to visualize the picture but just incase someone is i really need help on the proof for this one. Picture: two(supposedly

    asked by rebekah on October 23, 2010
  74. chem

    The diameter of a neutral neon atom is about 1.4 multiplied by 102 pm. Suppose that we could line up neon atoms side by side in contact with one another. Approximately how many neon atoms would it take to make the distance from end to end 1 cm? I got

    asked by hannah on February 8, 2009
  75. physics

    As Newton showed, gravity is a force that acts along the line separating two bodies and causes the two bodies to be attracted to each other (i.e. it is a central force). In this problem, assume that the planetary orbits about the Sun are circular. a. Does

    asked by zeph on October 24, 2010
  76. Physics

    A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 96 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 31.0 m/s2. At this time, its engines fail and the rocket proceeds to move

    asked by Elaine Jetton on September 12, 2011
  77. Econ

    A result of welfare economics is that the equilibrium price of a product is considered to be the best price because it a. maximizes total revenue for firms and maximizes the quantity supplied of the product. b. maximizes the combined welfare of buyers and

    asked by Rob on March 30, 2009
  78. Hot-air balloon

    A hot-air balloon is 180 ft above the ground when a motorcycle passes directly beneath it (travelling in a straight line on a horizontal road) going at a constant speed of 60 ft/s. If the balloon is rising vertically at a rate of 15 ft/s, what is the rate

    asked by Jake on March 15, 2011
  79. physics

    One athlete in a race running on a long, straight track with a constant speed v1 is a distance d behind a second athlete running with a constant speed v2. Find the time t it takes the first athlete to overtake the second athlete, in terms of d, v1, and v2.

    asked by victora on October 10, 2016
  80. accounting

    herman company received proceeds of $188,500 on 10-year, 8% bonds issued on january 1, 2009. the bonds had a face value of $200,000, pay interest semi-annually on june 30 and december 31, and have a call price of 101. herman uses the straight-line method

    asked by debbie on November 10, 2010
  81. physics

    A spacecraft is on a journey to the moon. At what point, as measured from the center of the earth, does the gravitational force exerted on the spacecraft by the earth balance that exerted by the moon? This point lies on a line between the centers of the

    asked by Dee on February 12, 2013
  82. physics help please!

    A spacecraft is on a journey to the moon. At what point, as measured from the center of the earth, does the gravitational force exerted on the spacecraft by the earth balance that exerted by the moon? This point lies on a line between the centers of the

    asked by Hannah on February 10, 2011
  83. Precalculus

    Johnny's Tumblers sells plastic cups in bulk for start-up restaurants. Their cost for producing these is modeled by: c(x) = 0.02x^2 + 0.5x + 40 a) Since the marginal cost is found by taking the derivative, the formula for c'(x)= ? (My answer: 0.04x + 0.5)

    asked by Amanda on March 24, 2017
  84. English (Help Me, Help Me,Please Somebody Help Me)

    write a news story in inverted-pyramid style. Begin your story with a summary news lead of no more than 20 words and then write a full story using inverted pyramid style. Using the scenario below. A home at 2481 Santana Avenue was burglarized between the

    asked by Mary on May 29, 2013
  85. More Algebra 2

    It would be great if, again, someone would check these answers for accuracy. I'd like to know if I'm doing them right. 1) What equation defines an exponential decay function? a) y=x^pi b) y=pi^-x c) y=(1/pi)^-x d) y=pi times x I think the answer is c. 2)

    asked by Lindsay on May 23, 2007
  86. Physics

    I already figured out the answers to some but I need help with two more. 1) A disk with an initial angular velocity ω0 = 4.5 rad/s experiences a constant angular acceleration of α = 7.5 rad/s2 for time t = 15 s. Please answer the following questions. ω0

    asked by Michelle on April 2, 2014
  87. Maths - Recipricals

    I'm having some torubles understanding these question. Sketch y1 = x-3 and y2 = 1/x-3 on the same set of axis a) What is the relationship between the zero of y1, and vertical asymptote of y2? Does the question mean when y1 = 0?. I know the vertical

    asked by TK on August 23, 2008
  88. english(business writing)

    The same scenario, different roles and perspectives: The Situation. A company recently installed an Eazy-Air Model 77 air conditioner in your upstairs den. You are Norman E. Stocker, of 41 Citrus Place, Sumatra, FL 32691. Your wife supervised the work.

    asked by Mr. Salman on August 16, 2007
  89. English

    Choose the term that describes the type of sentence shown. If you are in line early, you'll be sure to get the best tickets. A.) compound-complex B.) complex C.) compound D.) simple I think it is C? John was late to dinner and I was late to the movies. A.)

    asked by Cassie on December 16, 2013
  90. Precal

    I do not understand how to do this problem ((sin^3 A + cos^3 A)/(sin A + cos A) ) = 1 - sin A cos A note that all the trig terms are closed right after there A's example sin A cos A = sin (A) cos (A) I wrote it out like this 0 = - sin^6 A - cos^6 A +

    asked by Joe on January 14, 2010
  91. math

    on a drive through allegheny county,natalie drove due west for 9 miles,then turned left and proceeded to drive due south.after traveling 12 miles south,what was the straight 12 miles line distance between where natalie startd and where she ended her drive?

    asked by pierre on November 15, 2012
  92. Chemistry

    Energy Level Transfer of Hydrogen's electron. For each line, determine the prinicpal energy level to which hydrogen's electron was excited. When the electron fell to the 2nd level, energy was released corresponding to each of the lines. E= 2.179X10-18

    asked by Melody on November 7, 2012
  93. physics

    An airplane flies 200 km due west from city A to city B and then 280 km in the direction of 30.5° north of west from city B to city C. (a) In straight-line distance, how far is city C from city A? (b) Relative to city A, in what direction is city C? The

    asked by Elisa on June 2, 2008
  94. algebra

    I am confused about this one. It is about football. "In a football game the ball was advanced 5 yards from the Juniors' 25-yard line towards the Seniors' goal, then 6 yards then 8 yards back, 13 yards forward, 5 yards back, and then 11 yards forward. What

    asked by Amal on June 15, 2010
  95. PHYSICS

    A catapult launches a rocket at an angle of 56.9° above the horizontal with an initial speed of 100 m/s. The rocket engine immediately starts a burn, and for 3.25 s the rocket moves along its initial line of motion with an acceleration of 28.1 m/s2. Then

    asked by j on April 25, 2012
  96. VB 2008 Programming

    HELP!!!! I'm not sure How to get started nor the steps to design this project. The file MEMBERS.TXT contains the names of the 100 members of a club. Write a program to randomly select people to serve as President, Treasurer, and Secretary. Note: A person

    asked by Lee on November 20, 2010
  97. Ethics

    I have to read the essay "Some Moral Minima" by Lenn Goodman. I have tried to read this a zillion times and I don't know if it's my ADD or what, but I cannot wrap my mind around this unless I sit and look up each word out of the dictionary. Can someone

    asked by Holly on July 4, 2011
  98. us history

    "Although the economic growth of the United States between 1860 and 1900 has been attributed to a governmental policy of laissez-faire, it was in fact encouraged and sustained by direct government intervention." Assess the validity of this statement. What

    asked by Dee on January 13, 2011
  99. chemistry

    Predict whether reactions should occur between aqueous solutions of the following compounds. If so, write balanced molecular and net ionic equations for the reactions. Include physical states. a. (NH4)2CO3 and CrCl3 b. Ba(OH)2 and HCl c. FeCl3 and NaOH d.

    asked by ABCD on July 3, 2011
  100. HISTORY

    PLLEASE HELP ME i have no clue what to put. Write a series of five journal entries from the point of view of a member of a tribe that has been conquered by the Incas. Make sure that you bring out positive and negative aspects of Inca rule. Each journal

    asked by Tiffany on January 15, 2010

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