1. Algebra 2

    How in the world do you write "n" in expanded form?

    asked by Embraced on January 16, 2012
  2. Chemistry

    Does Pb(NO3)2 + AgNO3 form a precipitate?

    asked by Mackenzie on November 19, 2008
  3. Math

    What is 18 millionths written in standard form

    asked by Bob on April 11, 2016
  4. algebra

    how do I write 2.5=h3o^+ in scientific form?

    asked by sabrina on December 4, 2016
  5. math

    What is the simplified form of the square root of 8x^5?

    asked by Brenda on January 5, 2013
  6. math

    If f(x) = 2x + 3 and g(x) = 3x - 2 find (f(g(f(2))))/{g(f(g(2)))). Express your answer in the form (a)/(b).

    asked by Mal on April 9, 2016
  7. science

    water in gas form is called

    asked by paula on January 8, 2013
  8. math

    What is the simlified form of the square root of 8x^5?

    asked by Brenda on January 5, 2013
  9. maths

    write 194 in the form of 10k a

    asked by shehzad on August 18, 2015
  10. geometry

    How do you find the slope-intercept form for 3y+2x+12=0?

    asked by courtney on November 1, 2010
  11. Math

    What is the simplified form of: -(14x)y-7z Please help. Thank You. Not sure what the answer is.

    asked by Deborah on January 9, 2013
  12. chemistry

    Which halogen can form only one oxidation state other than zero?

    asked by anna on November 10, 2010
  13. math

    how we write 5 1over2 i standard form

    asked by Anonymous on January 25, 2012
  14. Algebra

    find the slope -intercept form for 2x+6y=11

    asked by linda on January 12, 2013
  15. Trigonometry

    what is z= -2-2square root of 3i in trigonometric form.

    asked by Josh G. on December 2, 2012
  16. Math

    If Vr=[sin(B/2)]*{cos[A+(B-1)r],how do we write Vr in the form, Vr=f(r) - f(r-1) ? Thank you!

    asked by Beth on July 24, 2017
  17. Math

    What is 9 divided by 7 with the answer in fraction form?

    asked by Janey on August 19, 2015
  18. math

    0.3 and 0.5 express them as fractions in simplest form

    asked by bryanna on September 9, 2015
  19. math

    Evaluate write in simplest form Y - for y = -6 and z = -20 z

    asked by brittany on August 18, 2011
  20. prelag8

    what is -21/56 in simplest form? do i drop the negative or keep it?

    asked by rockrboiluvr14 on September 14, 2013
  21. calculus

    Consider the infinite series of the form: (+/-)3(+/-)1(+/-)(1/3)(+/-)(1/9)(+/-)(1/27)(+/-)...(+/-)(1/3^n)(+/-)... (A) Find x and y from: x(

    asked by Megan on April 25, 2010
  22. precalculus

    convert r sinθ = 2 to rectangular form

    asked by sam on December 9, 2016
  23. Trigonomentry HELP NOW

    Rationalize in simplest form: (2ãx + ã8x)/(xã8 + 5)

    asked by Fronda on November 1, 2010
  24. Science

    How can weathering cause sedimentary rocks to form ?

    asked by Anabelle on October 23, 2013
  25. algebra

    Please help THANKS write as a fraction in simplest form (a/b +1)(b/a-1)

    asked by Josie on December 31, 2012
  26. algebra 1

    write the equation in standard form. Y + 1 = X + 2

    asked by A on October 28, 2013
  27. algebra

    How to write 10x 2/5 in dadical form?

    asked by Anonymous on December 16, 2013
  28. Health 8R - help!

    Explain how siomese twins form please help

    asked by Laruen on December 4, 2012
  29. Calculus

    Given a power function of the form f(x)=ax^n, with f'(3) = 14 and f'(6) = 28, find n and a.

    asked by Catherine on October 9, 2013
  30. Pre-Algebra

    Write each ratio in simplified form. 6 3/10 to 1 4/5

    asked by Hayden on November 30, 2010
  31. music

    The second movement of a symphony is usually written in what form

    asked by Anonymous on January 6, 2013
  32. math

    Which of the following fractions is in simplest form? a)5/6 b)6/8 c)8/10 d)2/12. My answer is a.

    asked by ezekiel on December 19, 2013
  33. medical billing and coding

    what is the relationship between the claim form and reimbursement

    asked by stacy on July 3, 2011
  34. college algebra

    Write equation in slope form y+3= -3(x-6)

    asked by BJ on April 23, 2010
  35. Chemsitry

    Hello. I'm not n=sure about these answers so i was wondering if someone could check them out? 27, A: Which is a stronger acid - sulfuric or carbonic acid? (Answer: Sulfuric acid.) 27, B: Imagine you have two glasses. One contains a solution of carbonic

    asked by CRCAWF on May 11, 2009
  36. Chem Dr. Bob Plz

    Dr. Bob, I just did a home lab with citric acid and sodium bicarbonate and had to put them in cups and measure before and after.. I put 1.02g of sodium bicarbonate in a cup with water and stirrer (54.66g) then added .77g of citric acid and supposed to add

    asked by Jennie on March 4, 2015
  37. chemistry

    Consider the following reagents: zinc, copper, mercury (density: 13.6 g/mL), silver nitrate solution, nitric acid solution. a. Given a 500-mL Erlenmeyer flask and a balloon can you combine two or more of the foregoing reagents to initiate a chemical

    asked by kate on July 7, 2015
  38. Algebra

    Suppose a market research company finds that at a price (y) of $30, they would sell x =10 t-shirts. If they lower the price to y = $20, then more people would purchase the t-shirts, and they can expect to sell x = 30 t-shirts. Find the equation of the line

    asked by Gurlredneck on March 30, 2012
  39. Biology

    Cellular Respiration and Photosynthesis co-exist as paired metabolic processes. Photosynthesis uses light energy to convert carbon dioxide into glucose, a simple sugar, in two steps, the light dependent and light independent reactions. Oxygen is produced

    asked by Tammy on June 12, 2009
  40. Health (Ms. Sue)

    Compare the BAC that represents the legal limit with the BAC at which driving is first impaired. A: While at a different range, these BAC are similar as they both possess effects upon the body and the mind. For example, the BAC of 0.08, which represents

    asked by Anonymous on November 8, 2013
  41. New AP Chem Question for Dr. Bob

    This is a Hess' Law problem. I think I got it but I'm hoping you could check it for me: Calculate the heat of reaction for changing 1 mol of silica, SiO2, that has been extracted from sand into the pure silicon that is needed to make computer chips. Use

    asked by Belinda on January 24, 2007
  42. Chemistry

    Ethyl butyrate is an artificial fruit flavor commonly used in the food industry for such flavors as orange and pineapple. It can be produced by the reaction of butanoic acid with ethanol in the presence of an acid catalyst. i) Given 8.45g of butanoic acid

    asked by grangeH on September 20, 2012
  43. chemistry

    A 0.500 L solution of 7.50 M hydrochloric acid is used to neutralize a 250.0 g sample of calcium hydroxide. Calcium chloride – a chemical used to control highway dust, strengthen concrete mixes, and add flavor to foods – is produced by the reaction. 2

    asked by BT on March 1, 2010
  44. Environmental Science

    1. A prion is an infectious, self-reproducing protein structure. True X False 2. As one organism eats another, toxins can be spread throughout the food chain. True False x 3. The problem with DDT in the environment is that it decomposes quickly. True False

    asked by Steve on October 10, 2017
  45. Health,Safety,andNutrition

    A condition often brought on by an allergic reaction is: A: anemia B: diabetes C: asthma D: seizures I picked C Thanks

    asked by Barb on February 14, 2010
  46. Chemistry

    The solubility product for Ni(OH)2(s) is 1.6 ✕ 10−16. Calculate the value of ℰ° for the following half-reaction. Ni(OH)2 + 2 e− → Ni + 2 OH − I have no idea what equation to use or how to solve this problem

    asked by Elizabeth on May 11, 2018
  47. chemistry

    write the net ionic equation of the following reaction: HCl(aq)+NaOH(aq)--> NaCl(aq)+H2O(l)

    asked by Sid on January 3, 2012
  48. grade 12 chem

    use the activity series to predict if a reaction will occur, complete and and balance your equation. Zn(s)+ Cu(NO3)2

    asked by sailor on November 11, 2010
  49. orgenic chemistrry

    why is the reaction mixture extracted with sodium bicarbonate?give an equation and explain its relevance.

    asked by priyanka on November 12, 2009
  50. Chemistry

    What chemical equation for the neutralinzation reaction between potassium hydrogen sulfate and sodium hydroxide.

    asked by Harris on June 10, 2009
  51. chemistry

    When the following reaction is balanced in acid solution, the coefficient of H+(aq) will be: Cr2O72-(aq) + Sn2+(aq) --> Cr3+(aq) + Sn4+(aq)

    asked by Becca on March 23, 2012
  52. chemestry

    PLEASE,COULD ANYONE HELP ME to balance this redox reaction : Cr2S3 PbO2 + H2SO4 + -------> PbSO4 H2Cr2O7+H20

    asked by Anonymous on June 22, 2016
  53. chemistry

    How many grams of water are produced from the reaction of 1.26 mol of oxygen according to this equation? 2H2(g) + O2(g) ¨ 2H2O(g)

    asked by Anonymous on October 13, 2010
  54. chemistry

    if the rate of a reaction doubled with temperature increase from 30 to 40 degrees celcius, what is the activation energy

    asked by kim on March 19, 2012
  55. chemistry

    In general, which reaction(forward, reverse, or neither) is favored if the value of K at a specified temperature is a. equal to 1? b. very small c. very large

    asked by kate on June 5, 2009
  56. chemistry

    Write the anodic reaction for the electrolysis of zinc chloride solution using platinum electrode

    asked by osmon armin on September 29, 2016
  57. Chemistry

    find the reaction quotient: partial pressures are: p of N2=.903, P of H2=.888, P of NH3=.025

    asked by Anne on October 31, 2010
  58. chemistry need help

    In general, which reaction(forward, reverse, or neither) is favored if the value of K at a specified temperature is a. equal to 1? b. very small c. very large

    asked by bob on June 4, 2009
  59. Chemistry

    What are the products for the reaction of Sodium hydrogen phosphate with nickel II nitrate Ni2HPO4 + Ni(NO3)2 -->

    asked by Lori on September 20, 2011
  60. chemistry

    how will you recognize that a singe replace reaction has occured when you combine an active metal with 6M HCI

    asked by demetris on October 24, 2012
  61. chemistry

    Balanced equation for Oxidation-Reduction reaction for Ho2 + Cr(OH)3 = CrO4 + OH. Please show your work

    asked by Danyelle on April 2, 2011
  62. Chem

    Enter the net ionic equation, including phases, for the reaction of AgNO3(aq) and KCl(aq).

    asked by Ashley on September 12, 2016
  63. Chem

    What is the free energy change in kJ for the reaction below? 2 BrO3-(aq) + 12 H+(aq) + 5 Fe(s) « Br2(l) + 6 H2O(l) + 5 Fe2+(aq) E° = 1.960 V.

    asked by Anonymous on May 7, 2010
  64. Chemistry

    After 79 mins 20.0% of a compound has decomposed. What is the half life of this reaction assuming first-order kinetics?

    asked by Josh on July 16, 2011
  65. Chemistry

    Write 3–4 sentences to describe how coupling reactions are used to drive an unfavorable chemical reaction

    asked by Madison on May 30, 2015
  66. chemistry

    balance the equation and name the reaction taking place C3H5OH+O2 equals CO2+ H2O

    asked by patricia purnell on May 13, 2013
  67. Science

    How many atoms are in LiBr2 show in the reaction side? LiCl (22g) + Br2 (30g)

    asked by M on January 15, 2015
  68. Chemistry

    Write a chemical reaction showing an amphiprotic anion reacting as a base in water. Thank-you

    asked by Saphire on January 20, 2012
  69. Chemistry

    AgNO3 + NaCl AgCl + NaNO3 What happens when nitric acid (HNO3) is added to the reaction?

    asked by ryancon on September 13, 2018
  70. science

    you plan to measure the thermal energy released durning a chemical reaction what tool would you use

    asked by kayalh on May 19, 2016
  71. chemistry

    Write net ionic equation for the reaction between nitric acid and calcium hydroxide.

    asked by ivy on February 10, 2012
  72. Chem 104

    The reaction of 2.30g N2 with excess H2 produces 2.00g NH3. The percent yield of this reaaction is?

    asked by Zoria on July 22, 2011
  73. Chemistry

    find the reaction quotient: partial pressures are: p of N2=.903, P of H2=.888, P of NH3=.025

    asked by Anne on October 31, 2010
  74. organic chemistry

    write a balanced equation for the reaction of benzoic acid with 3 M sodium hydroxide solution

    asked by cindy on May 28, 2009
  75. chemistry

    After 56.0 min, 25.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics?

    asked by Anonymous on February 14, 2012
  76. chemistry

    at some temperature, Keq=33 for the reaction H2 + I2 -> 2HI. If initially, [H2]= .0600 M and [I2]= .0300 M, what are all three equilibrium concentrations?

    asked by seth on March 8, 2016
  77. Chemistry

    What is the significance of a potential energy diagram? What kind of global picture does it provide about the reaction?

    asked by anonymous. on November 11, 2014
  78. Chemistry

    For a reaction: AB arrow A+B, rate=k[AB]^2and k=0.2L/mol.s a)how long it will take for [AB] to reach its initial concentration of 1.5M

    asked by Anonymous on December 9, 2012
  79. CHEMISTRY

    Write the net ionic equation for the reaction between potassium hydroxide and copper(I) nitrate.

    asked by Michael on April 6, 2014
  80. chemistry urgent

    Draw major product of substitution reaction of (2R,3S)2-bromo-3-methylpentane with CH3CH2O- nucleophile

    asked by zoe on March 7, 2011
  81. Physical Science

    How do I write and balance this chemical equation as a double replacement reaction: K2SO4(aq) + PB(NO3)2 (aq)

    asked by Carissa on May 4, 2010
  82. Chemistry

    2C2H6 +7O2 --> 4CO2 + 6H2O If 6 moles of O2 are used in the following reaction, how many grams of CO2 will be produced?

    asked by Barbara on April 15, 2011
  83. Chemistry

    What is the standard heat of reaction (Delta H^0) for the decomposition of hydrogen peroxide? 2H2O2 (l) ==> 2H2O (l) + O2(g)

    asked by Jack on May 23, 2010
  84. chemistry

    Which direction would equilibrium shift in the reaction N2 + 3H2 2NH2 + 22,000 cal if it is cooled?

    asked by Marcie on April 27, 2013
  85. chemistry

    What is the mole ratio between all compounds of this reaction:HC2H3O2 + NaHCO3 = NaC2H3O2 + H2O + CO2

    asked by Jeanne on March 4, 2013
  86. chemistry

    What is the correct balanced redox reaction for the cell shown below?Fe(s) | Fe2+(aq) || Co2+(aq) Co3+(aq) | Pt

    asked by Anonymous on February 1, 2011
  87. i hate.."chemistry"

    write the balanced half reaction for the conversion of HOBr(aq) to Br2(aq) in acidic solution

    asked by amethyst on May 12, 2008
  88. chemistry!

    How many grams of NH3 can be produced from the reaction of 17.8 moles of H2 and a sufficient supply of N2? N2 + 3H2 ---> 2NH3

    asked by please help on April 23, 2012
  89. Chemistry

    What is the net ionic equation for this reaction? 2MnO4 (aq) + 5H2C2O4 (aq) + 6H(aq)----->10CO2 (g) + 2Mn(aq) + 8H2O(l)

    asked by Sara on January 16, 2012
  90. chemistry

    3Ag(s) + 4HNO3(AQ) = 3AGNO3(aq) + NO(g) + 2h2o(l) How many moles of NO can be produced by the reaction of 54.0g of Ag show me the step please

    asked by jhong on April 9, 2012
  91. science

    how might an industrial chemist increase production of their plant with knowledge of reaction rate. please explain.

    asked by michelle on January 26, 2007
  92. chemistry

    what is the relationship between reaction rate and shape of equilibrium graph in relation to concentration vs time?

    asked by sarah on April 18, 2010
  93. chemistry

    how many electrons are transfered in one atom of Mn in the reaction?MnO2+4HCl=MnCl2+2H2O+Cl2

    asked by Natty on December 7, 2015
  94. sicence

    since action and reaction are exactly equal and oppositely directed,how is it possible for a net force to be acting on a body?

    asked by The Ab on May 3, 2010
  95. chemistry!

    How many grams of NH3 can be produced from the reaction of 17.8 moles of H2 and a sufficient supply of N2? N2 + 3H2 ! 2NH3

    asked by please help on April 23, 2012
  96. chemistry

    Please tell me any website....where I can find details of the experiment Reaction of 4-aminotoluene and o-vanillin(for preparation of azomethine)

    asked by Edward on August 4, 2015
  97. Organic Chem

    Outline a separation scheme for isolating pure isopentyl acetate from the reaction mixture.

    asked by Peter on April 16, 2012
  98. chemistry

    Calculate the number of grams of acetic acid present in the mixture after the reaction is complete.

    asked by Anonymous on January 30, 2013
  99. chemistry

    write a balanced formula equation for the reaction between sulfuric acid and calcium metal

    asked by trista on May 14, 2008
  100. Chemistry

    The value of delta H for the reaction of 2Na2O2(s) + 2H20(l)----> 4NaOH(s)+O2(g) is -126KJ When 2.0 moles of NaOH is formed?

    asked by Linda on November 14, 2011