1. chemistry

    What products are formed when aqueous solutions of Na2SO4, Fe3SO42, and BaCl2 are mixed together ? Can someone help me write out a balanced equation for the reaction that occurs.

    asked by zach on January 24, 2012
  2. Conics

    What type of conic is represented by the polar equation? r= 1 / 4-6cos theta Ellipse Hyperbola Parabola Circle Help! Homework help needed

    asked by Alan on April 26, 2018
  3. Polar equations - Help?

    i need to graph the polar equation 2 = r cos (theta + 180) on one of the graphs that looks like a flattened globe. So far I have 2=r cos180 costheta + r sin180 sintheta what do i do now?

    asked by Tabby on April 20, 2012
  4. Physics

    write an equation that relates to frequency(f) applied to the string to the length(L) between the two fixed end points. This was from lab of standing waves.

    asked by kailey on February 22, 2017
  5. Physics

    The equation of a transverse wave travelling along a string is given by "y=5 sin π (0.5x-40t)". Find the: a.Amplitude b.Wavelength c.Frequency d.Velocity e.Period

    asked by Christianah on March 20, 2019
  6. Chemistry

    Suggest a procedure that could be used to remove lead (II) ions from industrial waste water as a precipitate. Provide an equation and explain your choice.

    asked by Hannah on August 12, 2012
  7. algebra

    a cellular phone company charges $.45per minute plus a $25 monthly fee. how do you write the equation to determine the cost for the month

    asked by ora on December 4, 2015
  8. Chemistry

    What is the total ionic equation of this: 3CaCl2(aq) + 2K3PO4(aq) → Ca3(PO4)2(s) + 6KCl(aq) Shw all physical states of the reactants and products

    asked by John on September 26, 2014
  9. Chemistry

    We allow 24.0 g of CH4 to react as completely as possible with excess O2, to form CO2 and H2O . Write the balanced equation for this question . What mass of O2 reacts?

    asked by Egemen on January 13, 2016
  10. calc

    What is an equation of the line tangent to the graph of f(x)=x2(2x+1)3 at the point where x=-1? (that's x squared (2x+1)cubed) I'm having trouble finding the derivative:f'(x)which would be the slope (m). No one has answered this question yet.

    asked by Naz on November 7, 2010
  11. Chemistry

    Write the balanced chemical equation for the equilibrium that is taking place between acetic acid and sodium acetate in the buffer solution.

    asked by Axl on March 15, 2010
  12. Physics

    How much torque is applied to a bicycle wheel whose radius is 0.40 m in order to accelerate the 15 kg bike and 78 kg rider at a rate of 3.4 m/s^2? I'm totally lost on this one. Which equation do I need to use?

    asked by Lindsay on January 8, 2008
  13. Algebra

    A ball is thrown from the top of a 50-ft building with an upward velocity of 24 ft/s. When will it reach its maximum height? How far above the ground will it be? Use the equation h(t)= -16t^2 + 24t + 50

    asked by Connor Steelwood on March 28, 2019
  14. Math (Algebra)

    3 robots go out to lunch. They decide to share the $11.91 bill evenly. How much does each robot pay? Equation: 3x = 11.91 #1. What does x represent? #2. Solve for x. #3. Answer the question.

    asked by Sydney on May 6, 2013
  15. Chemistry

    Write the net ionic equation for the reaction between sodium chloride and cobalt (ll) nitrate. so far i have... 2NaCl(aq)+ Co(NO3)2(aq)---> NaNO3(aq)+CoCl2(s)

    asked by Alexis on August 27, 2012
  16. chem

    what would the equation for this reaction be?; KAL(SO4)2.12H2O crystallizes out when water is cooled enough to cause the soluble ions to coalesce and precipitate out of solution.

    asked by Ty on October 24, 2017
  17. Chemistry

    For the oxidation-reduction reaction equation given here, 2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the formation of one formula unit of product.

    asked by Jematormal91 on May 11, 2012
  18. Math (FST Exponential & Logarithm)

    What is the amount and type of the growth factor of the model: y=3(1.04)^x Determine the equation for the asymptote: y=2+ log(x-3) For the second question, I don't even have an idea what is to be determined.

    asked by Sandy on March 17, 2010
  19. Physical Chemistry

    Calculate the standard reaction Gibbs energy of the oxidation of ammonia to nitric oxide according to the equation 4 NH3g) + 5O2(g) → 4 No(g) + 6 H2O(g).

    asked by KC on November 10, 2010
  20. Chemistry

    Balance this chemical equation. K4Fe(CN)6 + KMnO4 + H2SO4 ---> KHSO4 + Fe2(SO4)3 + MnSO4 + HNO3 + CO2 + H2O

    asked by Peter on November 10, 2012
  21. Chemistry

    For the oxidation-reduction reaction equation given here, 2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the formation of one formula unit of product.

    asked by Jematormal91 on May 10, 2012
  22. Chemistry

    Given the following equation: N2(g) + 3H2(g) = 2NH3(g). Determine to one decimal place the molar mass of each term, and WRITE EACH ONE AS A CONVERSION from moles to grams.

    asked by Kate on December 5, 2011
  23. Math!!!!

    I am getting desperate. Can someone please help me with this and thank you in ADVANCE!!!! WRITE A QUADRATIC EQUATION IN THE variable x given the solutions: -sqrt7, 7sqrt7.This needs to be in the standard form ax^2 + bx+c=0. I really need help as this is

    asked by barb on November 12, 2010
  24. math algebra

    What is y intercept of equation represented: X Y 150 1047 125 872 100 697 75 522 a. -3 b. 0 c. 3 d. 172 I come up with totally different answers than these. Do you use the y2-y1/×2-×1 ?

    asked by taylor on December 18, 2014
  25. Algebra 2

    Suppose you make $10 an hour at your job that you have been working at for 5 years. Each year, you get a 6% raise. 1. Write an equation that models this situation. Is this correct? y=10(1.06)^x

    asked by Anonymous on January 22, 2013
  26. precal

    Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) tan θ = 1

    asked by stellar on October 22, 2011
  27. precal

    Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) cos θ = 0.32

    asked by stellar on October 22, 2011
  28. matt/116

    Will someone please help me find the answer to this question please. How do you write a system of linear equations in two variables? Explain this in words and by using mathematical notation in an equation.

    asked by Sade C on February 12, 2013
  29. general chemistry

    Copper crystallizes in a face-centered cubic unit cell with an edge length of 362 pm. What is the radius of a Cu atom in pm? What equation do you use?

    asked by Anonymous on December 9, 2014
  30. math

    Find the equation for the surface formed by rotating (x = 3*cos(y)) about the y axis. Your answer must not contain radical symbols (square root signs).

    asked by hamlet on April 29, 2012
  31. Chemistry

    Which of the following is a balanced chemical equation H2O2 → H2O + O2 2 Fe2O3 + 3 C → 4Fe + 3CO2 SO2 + O2 + 2H2O →4H2SO4 2 Mg + HCl →MgCl2 + H2 not sure

    asked by stacyy09 on January 29, 2015
  32. math

    Find the equation for the surface formed by rotating (x = 3*cos(y)) about the y axis. Your answer must not contain radical symbols (square root signs).

    asked by hamlet on April 29, 2012
  33. Net Ion Equation

    How can you write a net ion equation and identify the conjugate acid/base pairs for these followings? KNO3 Na2HPO4 NH4Br

    asked by Nicole on April 14, 2011
  34. algebra

    we are using the distance formula right now and i asked my teacher for help on an equation and this quation had a fraction in it and i don't understand how she got her answer. the question that i need help on is: d= the square root of (4-6)^2+(-2/3-2)^2.

    asked by Rebecca on April 15, 2008
  35. Math

    I am supposed to find five ordered pairs to make the equation true y = 20 + x/3 so far I have (0,20) and (6,22) is this right? I am unsure because my text example had x^2 + 3x = y (0,0) (1,4) (2,10) (3,18) (4,28) and they have a common theme (muliply by by

    asked by Punkie on January 6, 2010
  36. mathematics

    If an amount of money A results in investing a sum P at a simple interest rate of 7% for 10 years, then A = 1.7P. Graph this equation for ordered pairs (P,A).

    asked by sandra on January 20, 2016
  37. AP Chemistry

    Hi I need help on this bonus question my teacher gave out it's reducing/oxidation equation in an acidic solution. Cr(NCS)6-4 (aq) + Ce+4(aq) ----------> Cr+3(aq) + Ce+3(aq) + NO3-1(aq) + CO2(g) + SO4-2 (aq)

    asked by Gordon on May 9, 2017
  38. Algebra

    I have to work out this equation for my college paper and I am having trouble understanding graphs, etc. The question is C=200+50 and C=300+25. Can anyone walk me through the steps on how to graph this?

    asked by Maggie on August 1, 2011
  39. chemistry

    When the equation: Al(s) + HSO4-(aq) + OH-(aq) → Al2O3(s) + S2-(aq) + H2O(l) is balanced with smallest whole number coefficients, the coefficient for the hydrogen sulfate ion will be ______.

    asked by John Butch on May 7, 2017
  40. math

    Bill purchased 4 pens for $3.32 including $.16 sales tax. FIND THE C COST OF ONE PEN. I need to write this in an equation. Then solve that's what the worksheet says.

    asked by travis on February 17, 2011
  41. general sci

    List the proper coefficients to balance the following equation with the smallest whole numbers possible. Use a comma to separate each coefficient (for example 2,1,3): _____C12H22O11 ---> _____C + _____H2O

    asked by ange on May 18, 2009
  42. CALCULUS

    Using the separation of variables technique, solve the following differential equation with initial condition: (4x sqrt)(1 - t^2)(dx/dt) - 1 = 0 and x(0)=-2 I believe that the answer is one of the following two options: a.) 2x^2 = arcsint + 8 b.) arccost +

    asked by Anonymous on May 26, 2012
  43. chemistry

    What is the approximate volume of 0.095 M HCl needed to neutralize 0.25g of sodium carbonate. Hint: Write a balanced equation first.

    asked by Nikkie on September 21, 2011
  44. Chemistry

    Balance the following redox equation using the oxidation number change method. Describe each step that is involved: Al(s) + PbSO4 - - > Al2(SO4)3 + Pb(s)

    asked by Genna on May 25, 2016
  45. Trigonometry

    Given the equation for simple harmonic method d=1/12 sin(60 pi t) answer the following questions: b)Find the frequency i got 60pi c)Calculate the value of d when t=3 d)Determine the least positive value of t for which d=0.

    asked by Ryan on March 24, 2016
  46. Pre-Calculus

    Help------I'm confused. I am trying to convert the linear equation 4x+3y-10=0 to polar form. Thus far, I have 2= r cos(theta -?????). I understand that I must get the arctan of 3/4 but I get the answer of 36.9. Is this correct and if not--what am I doing

    asked by Lucy on September 1, 2008
  47. mathematical physics

    Calculate the work done by a force Vector F = y^2z^3i^+2xyz^3j^+3xy^2z^2k^ in moving an object along the path defined by the parametric equation x=t, y=t, z=t. Between the point A(t=0) and B(t=1).

    asked by gourav on March 23, 2015
  48. chem

    Does baking soda and vinegar have a complete ionic equation? HC2H3O2 (aq) + NaHCO3 ===> NaC2H3O2(aq) + H2CO3(aq)----->H2O(l)+CO2(g)+2H2O(l)

    asked by Lou on September 30, 2009
  49. chemistry

    Write a balanced nuclear equation for the positron emission of each of the following radioactive isotopes: silicon-26,mercury-188,7737Rb,9345Rh

    asked by lana on December 5, 2013
  50. Chemistry

    If the electromagnetic radiation used to send television signals have a frequency of 3.0 * 10^9 Hz, what is its wavelength? I forget how to do a problem like this. Just taking a guess, is this somewhat a conversion equation?

    asked by Jack on July 8, 2015
  51. chemistry

    assuming in the titration of NaCl and AgNO3, a student erroneously carried it out at a low PH,what effect will it be on the result. explain with an ionic equation

    asked by Mina on February 16, 2016
  52. math

    I am thinking there has to be a typo on my homework. The question states to Decide if the given number is a solution to the given equation and below it it shows 24/x 2;3.... does this make sense if so could someone explain it to me?

    asked by sam on September 20, 2009
  53. algebra

    Graphthe equation y plus 6 equals 1/8(x-2 1/8x - 2/8 add 2/8 to 6, so 61 times 8/8 makes it 48/8 plus 2/8 is 50/8 mx plus c would be 1/8 plus 50/8. Is this correct so afr? If so how do I graph 50/8? Do I just put at 50 on the y axis and do 1/8 rise over

    asked by Elisa on September 27, 2009
  54. Maths

    Ravi went to the market and bought 43 apples and paid Rs.559 to the vendor.Write a suitable equation in one variable to represent the data.

    asked by Jayatheerth on January 19, 2017
  55. chem

    whats the net ionic equation for the following reaction AgNo3(aq)+Na2SO4(aq) answer 2Ag+(aq)+SO42- (aq)___> Ag2So4(s) correct?

    asked by amber on October 3, 2010
  56. Chemistry

    how do I balance the following skeleton redox equation for a reaction occurring in acidic solution. HNO2 + MnO4- yield to Mn2+ + NO3-

    asked by Rachel on March 12, 2012
  57. chemistry

    An aluminium can contains ferrous sulphate solution. It is observed that after a few days it develops holes in it. Explain the observation and write the chemical equation for it.

    asked by riya on May 31, 2011
  58. math

    Question from the Classroom: 10 A student claims that the equation Ö(-x) = 3 has no solution, since the square root of a negative number does not exist. Why is this argument wrong?

    asked by dan on April 13, 2010
  59. Chemistry

    Balance the following redox equation using the oxidation number change method. Describe each step that is involved Al(s) + PbSO4 - - > Al2(SO4)3 + Pb(s)

    asked by Abby on June 1, 2016
  60. math

    Write a equation for the following situation: In one U.S. town, the annual consumption, b, of beef (in kg per person) can be estimated by adding 20 to half the years, t, since 1975.

    asked by Dena on April 3, 2011
  61. Math

    I am supposed to find five ordered pairs to make the equation true y = 20 + x/3 so far I have (0,20) and (6,22) is this right? I am unsure because my text example had x^2 + 3x = y (0,0) (1,4) (2,10) (3,18) (4,28) and they have a common theme (muliply by by

    asked by Punkie on January 6, 2010
  62. chemistry

    write the overall, balanced molecular equation and indicate which element is oxidized and which id reduced for the following reactions. Include phase abbreviations. a) Mg(s)+Cr(C2H3O2)3(aq)--->? b) Cd(s)+AgNO3(ag)---->?

    asked by amanda on June 12, 2010
  63. geometry

    equation x+3y+2z=6 (6,2,3) how would you sketch the plane on a set of axes? is it supposed to look like a triangle? becuse my paper says it makes a trangular pyramid. i don't get it

    asked by jessica on May 31, 2011
  64. Chemistry

    How many grams of zinc metal are required to produce 2.00 L of hydrogen gas at STP according to the chemical equation shown below? Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)

    asked by Ryan on June 4, 2015
  65. Chemistry

    What is the concentration of ammonia in a solution that is .500 M NH4Cl and in which the solubility of Mg(OH)2 is 1.0x10^-3 M? Ksp for Mg(OH)2 is 6.3x10^-10. Write the equilibrium equation and calculate the overall K.

    asked by Anonymous on November 18, 2010
  66. Ap Chem

    how many milliliters of a 0.9 molar HCl solution are needed to react completely with 12 grams of zinc according to the following equation 2HCl+ Zn yields ZnCl2+ H2

    asked by Chasm on September 10, 2012
  67. Math 111

    Solve the equation by the square root property. If possible, simplify radicals or rationalize denominators. Express imaginary solutions in the form a+bi. [X+ 2/3]^2=10/9

    asked by Anonymous on April 2, 2010
  68. Ashford University

    Teh marketing director collects 36 weekly observations on S,A, and R to estimate the following multiple regression equation. S = a + bA + cR where S, A, and R. are measured in dollars per week.

    asked by alberta long on August 24, 2009
  69. physics

    how do we find the interpolation from a graph to determin the number of images which should be observer with a mirror angle of 90 degree and how do we calculate the line equation.

    asked by Riana on February 1, 2013
  70. Algebra

    please solve x+5y=10 -2x-10y=-20 Since the second equation can be obtained from the first (by multiplying both sides by -2), they are not independent and there is no unique solution. There are an infinite number of x,y combinations that are solutions.

    asked by Tony on March 20, 2007
  71. trig

    Two ships, one sailing at 30 km/hr and the other at 45 km/hr, left port at the same time. Three hours later they were 120 km apart. If you had to find the angle between their courses an equation that could be used to solve this problem is:

    asked by jonathan on February 24, 2008
  72. Chemistry

    Which equation does not fit the definition of oxidation? 1. Na ® Na+ + e- 2. C2H6 ® H2 + C2H4 3. C + O2 ® CO2 4. Ag+ + e- ® Ag Can some one help. I do not know which one. I am working on a practice test and there are no answers in the back of the book.

    asked by nan on November 3, 2011
  73. Math

    Can someone walk me through these becuase I'm just not getting it.... Let f(x)= 3 x 4^x. A.) 16f(x)= f(x+2) B.) f(x)= f(x-1) The quickest way to answer this question is to try different test values for x. My favorite was the number 13. Set x to 13, and see

    asked by Nicole on August 29, 2006
  74. math

    if I have 1 dime, two nickels and 4 pennies and I have to use tally lines to show the amount of coins, do I use 7 tally lines or break each coin down into their own tally lines?

    asked by joan on January 14, 2008
  75. MATH

    Mr. Smith used 17 lengths of fence to enclose his gardens. He now needs 6 lengths of fence for a dog kennel. Show how he can remove 6 lengths of fence and still have 2 squares. Please help!Thanks!

    asked by VER G. on February 5, 2016
  76. Chemistry

    How to prepare 100mL of 3% w/w Hydrogen Peroxide from 30% w/w Hydrogen Peroxide?Specific Gravity of 30%w/w Hydrogen Peroxide is 1.11g/mL. Can you please show the calculation steps? Thanks.

    asked by annie on February 18, 2012
  77. Langusage Arts

    My 4th grades needs HELP with (Show the possession of the subject.)the car of the principals The principal's car principal's shows that the car belongs to the principal.

    asked by J.R.G. on January 30, 2007
  78. Integrated Science.(I NEED ALOT OF HELP!)

    PLEASE I NEED ALOT OF HELP,IT'S GOING FOR 100%SO PLEASE HELP ME FOR MY PROJECT.THANK-YOU VERY MUCH. 1.)IDENTIFY WHERE HAZARD WARNING SYMBOLS CAN BE FOUND. 2.)EXPLAIN THE LIKELY CONSEQUENCES IF ANY TWO(20 INSTANCES IF THE WARNING SYMBOLS ARE IGNORED.

    asked by kavita on March 4, 2008
  79. chemistry

    1. An aqueous solution of weak base B of unknown concentration is tritrated with a known concentration of strong acid, HA. (a) Write the balanced chemical equation for this acid-base reaction, identifying the conjugate acid/base pairs. (b) If the

    asked by Phuong on April 8, 2011
  80. Chemistry

    IS THIS RIGHT? Experiments were performed with four metals and solutions of their ions: A-A^+, B-B^2+, C-C^2+, D-D^2+. The results of the experiments were: D^+2 + C ---> No reaction B^+2 + C---> B + C^+2 A^+ + B ---> A + B^+2 a.) Write the equation for

    asked by Julia on November 7, 2011
  81. CHEM

    A particular coal contains 2.55% sulfur by mass. When the coal is burned, it produces SO2 emissions which combine with rainwater to produce sulfuric acid. Determine how much sulfuric acid (in metric tons) is produced by the combustion of 1.1 metric ton of

    asked by DD on October 1, 2007
  82. Physics => speed of sound variation

    The speed of sound in air (m/s) depends on temperature according to aprox expression of v= 331.5 + 0.607 Tc Tc= temp in celcius In dry air, temperature decreases about 1deg celcius for every 150m rise in altitude. a) assume the change is constant up to

    asked by ~christina~ on February 20, 2008
  83. Pre calculus

    ramp needs an angle of elevation no greater than 4.8. the business has 8 ft to build the ramp. the ramp must rise 6 inches above the ground. can a ramp be built in this space? if a ramp can be built what is the minimum horizontal distance possible? please

    asked by Anonymous on March 2, 2017
  84. composition

    can you review this for me? please Public School to Home school A lot of parents are concerned about their child’s education. Some people think that sending their children to public school is best, while others prefer homeschooling. I will mention the

    asked by ucxdx on December 17, 2009
  85. history

    How did early Muslim empires generally treat conquered people? A: they were allowed to become first-class citizens upon converting to islam B: they were forced to give up their religions and convert to islam C: their religions were tolerated, but

    asked by Taylor on October 9, 2013
  86. statistics

    Just wondering if someone is able to give instructions as to how to go about this questions? As part of a large research project, a social psychologist develops a measure of global environmental attitudes (i.e., general attitudes towards the environment).

    asked by MM on March 10, 2012
  87. Science

    Develop three guidelines based on the four scientific principles of sustainability for our use of genetic engineering and synthetic biology to modify species and ecosystems. I know the four scientific principles are: 1) Reliance on solar energy 2)

    asked by STUDENT - IMPORTANT! on December 9, 2007
  88. AP English

    Analyze the validity of the following argument: Sally argues, "Mom, your rules are way too strict! Melissa's mother lets her stay out until 2:00 AM on weekends. Peter's parents let him go to all-night raves even on school nights. Tom's parents don't even

    asked by Ellie on September 10, 2015
  89. physics

    A hand-driven tire pump has a 2.50 cm diameter piston and a maximum stroke of 31.0 cm. (a) How much work (J) do you do in one stroke if the average gauge pressure is 2.40 multiplied by 105 N/m2 (about 35 psi)? (You may consider this an isothermal process.)

    asked by Eric on July 24, 2013
  90. Role of computers in media

    could u please help me out and give me a few tips about the role that computers, specifically I.T. plays in the media?? i have gathered a few ponts but not enough...any suggestions are welcome.. Please list what you have come up with so far. Then teachers

    asked by Jeet on July 17, 2007
  91. physics

    Two speakers are driven by a common oscillator at 870 Hz and face each other at a distance of 1.20 m. Locate the points along a line joining the two speakers where relative minima of pressure amplitude would be expected. (Use v = 343 m/s. Choose one

    asked by julie on January 31, 2011
  92. Calculus

    @oobleck (but anyone else can feel free to come and help) In response to (jiskha.com/questions/1795315/Please-check-my-answers-and-give-correct-ones-I-tend-to-make-dumb-mistakes-so-Im) #2 I got 6x^2(x^3 +5) #3 no matter how I solve it I get -2(sqrt(2) -1)

    asked by Mary on May 19, 2019
  93. com 215

    What steps would you take to ensure that the purpose of your message (whether informative, negative, or persuasive) is conveyed to your readers? I would ask them 1) if they had any questions about what had been said; 2) to synthesize what they had

    asked by Melissa on December 29, 2006
  94. English

    We have to give presentations on syntax. I remember awhile back reading this modernist poem which repeated the same sentence over 20 times but changed the order of words each time resulting in a different meaning. I think it really demonstrates the

    asked by Regina on April 3, 2011
  95. social studies

    What are three things that Paraguay, South America look like? I don't comprehend your question. Please restate it more lucidly. My teacher is making us name three items that Paraguay looks like and I can't think of anything. Can you help? You mean the

    asked by bailey on April 24, 2007
  96. chemistry

    A 211 g sample of barium carbonate, BaCO3, reacts with a solution of nitric acid to give bar- ium nitrate, carbon dioxide and water. If the acid is present in excess, what mass and volume of dry carbon dioxide gas at STP will be produced

    asked by myrtle on May 14, 2013
  97. Environmental Science

    Develop three guidelines based on the four scientific principles of sustainability for our use of genetic engineering and synthetic biology to modify species and ecosystems. I know the four scientific principles are: 1) Reliance on solar energy 2)

    asked by STUDENT on December 9, 2007
  98. Physics

    Engineers are trying to create artificial "gravity" in a ringshaped space station by spinning it like a centrifuge. The ring is 170 m in radius. How quickly must the space station turn in order to give the astronauts inside it apparent weights equal to

    asked by M on February 11, 2011
  99. Math (Physics)

    Problem: What wavelength photon would be required to ionize a hydrogen atom in the ground state and give the ejected electron a kinetic energy of 19.1 eV ? Answer--> λ =______nm [Note: I got 3.8x10^-8. I got it wrong twice] My steps: (32.7 eV)(1.6x10^19)=

    asked by Dom on April 25, 2017
  100. Math

    Assume that it costs Apple approximately C(x) = 36,100 + 100x + 0.01x^2 dollars to manufacture x 30-gigabyte video iPods in a day. How many iPods should be manufactured in order to minimize average cost? What is the resulting average cost of an iPod? (Give

    asked by Jerry on June 4, 2014

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