1. Math

    How do you write 1.42 * 10to the fifth power in standard form?

    asked by Live on October 24, 2016
  2. MATH116

    I'm not to sure about this but would it be written in this form: 2x + 4=6? Let me know if this is correct or not, I'm terrible with Algebra.

    asked by meshelle on January 20, 2009
  3. algebra 2

    Write in standard form (2b^2-b)+(b^2+4b-4) PLEASE EXPLAIN ON HOW TO DO IT I WANT TO LEARN

    asked by omar on February 10, 2014
  4. Algebra 2 (Math)

    What is the equation, in standard form, of a parabola that contains the following points? (-2, -20), (0, -4), (4, -20)

    asked by Reese on December 3, 2015
  5. Business

    where can i find an sample of an blank order form?

    asked by Bryan on June 9, 2008
  6. mathematicas

    how do you write the matrix: 1 2 -1 | 3 7 -1 0 | 2 3 2 1 | -1 in row echelon form?

    asked by mac on January 14, 2008
  7. Chemistry

    What precipitates form when CuSO4 and H3PO4 added together?

    asked by Manali on December 6, 2014
  8. Math

    Express 4.9sin(x)+4.4cos(x)in the form ksin(x+ϕ)

    asked by Dan on May 17, 2015
  9. Math 115 23

    Multiply 3 1/6 X 2 9/11 X 4 6/17. Write your answer in simplest form.?

    asked by Deb on January 19, 2009
  10. math

    what is six and three hundred seventy two thousandths in standard form?

    asked by Ciara on November 28, 2015
  11. 5th Grade Math

    Seven and three hundred and seventeen thousands in standard form is?

    asked by Anonymous on August 30, 2010
  12. mathematics

    deduce the completed square form for the following 2x^2+16x-10

    asked by rikki on June 6, 2008
  13. Pre Calculus

    Write the rectangular equation in polar form... x=3

    asked by Alexis on March 13, 2014
  14. English

    How do you pronounce "mouths," which is the plural form of 'mouth.'

    asked by rfvv on May 1, 2013
  15. science

    Explain why carbon can form so many organic compounds?

    asked by Ms. N on February 3, 2010
  16. MATH

    rewrite each linear function in the form y = mx + b: 3(2y-5)/4 = x - 1 Thank youuuu

    asked by Camz on December 9, 2015
  17. Algebra

    Write the expression 3X^12+20X^6+6 in quadratic form.???

    asked by None ya on May 10, 2010
  18. Geometry

    what shape does a semi circle form when rotated?

    asked by George on September 25, 2013
  19. math

    lines that form right angle when they meet are called

    asked by pavleen on February 18, 2010
  20. algebra

    Write the quadratic function in vertex form: f(x)=

    asked by Anonymous on October 29, 2013
  21. chemistry

    what is the precipitate form of 2naoh+cuso4->na2so4+cu(oh)2

    asked by charshley on July 18, 2016
  22. College Algebra

    Write the following in a+bi form (-5-i)/(3-3i) -5/3 and 1/3i (-5/2i)/(-1/5i) 23 and 0i (-2i)^3 -2 and 0 Im having trouble with these probems and here is my answers. PLEASE HELP

    asked by Anonymous on May 29, 2014
  23. Algebra

    y-27=4a 16x-2y=22 convert to slope -intercept form

    asked by Felecia on December 10, 2015
  24. forms of words

    can someone give me the noun form of peripheral? Chri

    asked by Chris on February 21, 2008
  25. math

    How can find weak form to d^4u/dx^4+du/dx=f (x) By using finite element

    asked by assma on November 21, 2015
  26. Math

    How you solve this in inequality form? Six less than or equal to the sum of 4 and -2x.

    asked by Jake on September 26, 2013
  27. advanced function

    Find an equation with the given form in each case below. y=sinè through(ð/2, 0)

    asked by mel on January 21, 2008
  28. math

    Which of the following side lengths could combine to form a triangle? a. 17, 13, 2 b. 15, 18, 24 c. 5, 9, 14 d. 16, 32, 16

    asked by boss on May 5, 2015
  29. Algebra

    What is the factored form of the following expression? x2 – 4xy – 21y2

    asked by Sandra on March 7, 2014
  30. Algebra

    Evaluate. Write in simplest form. 6-b/3a a=10 a=-9 My answer is 2 or 5...I'm not sure

    asked by Mae on May 25, 2015
  31. math

    Write each ratio as a fraction in simplest form : 11 1/3 out of 50 2/3, 5 1/4 out of 20 3/4, 28 1/2 : 30 1/4

    asked by Brooke on October 6, 2009
  32. math

    what is 4.089 in expanded form? my answer was 00.489.

    asked by aissatou on December 7, 2015
  33. chem

    For the following reactions, name the Bronsted-Lowry acids and bases. Then name the conjugate acid and bases. H3O+(aq) + CN-(aq) HCN(aq) + H2O I'm really confused on this whole concept even thought it's not really difficult. I said: acids: H3O+ bases: CN-

    asked by Chris on April 27, 2007
  34. tricky math

    consider the right triangle with sides 3,4,5. Notice that the lengths of the sides form an arithmetic sequence. a. determine three other right triangles wtih side lengths in arithmetic sequence. b.let the sides of a right triangle be a, a+d,a+2d units

    asked by Aerial on December 21, 2006
  35. Chemistry

    Consider the reaction Zn(OH)2(s) + 2CN-(aq) Zn(CN)2(s) + 2OH-(aq) a) Calculate K for the reaction. (Ksp Zn(CN)2= 8.0 x 10^-12) b) Will Zn(CN)2 precipitate if NaCN is added to a saturated Zn(OH)2 solution? I tried splitting this into two equations:

    asked by Kristina on April 11, 2007
  36. Chemistry

    drwls, if you are there, I got an answer of 42.5 Kelvin, so then that means it is a negative number if converted to degrees Celsius? Question: The heat capacity of a bomb calorimeter is 87.5 kJ/K (this value is for the total heat capacity including that of

    asked by Anne on December 13, 2007
  37. chemistry

    what mass of salt can be produced from the reaction of 3.45 grams of sodium hydroxide and an excess of hydrochloric acid?

    asked by Alexis on April 25, 2010
  38. physics hw

    Determine the stopping distances for a car with an initial speed of 87 km/h and human reaction time of 2.0 s for the following accelerations. (a) a = -4.0 m/s2 (b) a = -8.0 m/s2

    asked by kylie on December 16, 2016
  39. Chemistry

    The rate constant for this first order reaction is 0.0470s-1 at 400 C. A to products After how many secs will 11.0% of the reactant remain?

    asked by Josh on July 19, 2011
  40. AP Chem

    Lead metal is added to a solution of hydrochloric acid. What would be the theoretical cell potential, E°, for the reaction?

    asked by Sam on April 14, 2015
  41. AP Chemistry

    For the reaction 2C6H6+15O2 =12CO2+6H2O, what is the maximum amount of CO2 which could be formed from 5.12 g of C6H6 and 12.28 g of O2?

    asked by Anonymous on September 7, 2013
  42. chemistry

    the following reaction is endothermic; 3O2(g) = 2O3(g) If this reation is at equilibrium will it shift to the right or left if we: 1) add some oxygen

    asked by Chris on March 30, 2011
  43. Chemistry

    How many grams of PI3 could actually be produced from 250 g of I2 and excess phosphorous if the reaction gives a 98.5% yield? P4 + 6I2 --> 4PI3

    asked by Anonymous on February 26, 2012
  44. Chemistry

    Right, for the reaction of hot sodium hydroxide plus chlorine , how come one of the products are 5NaCl and not Na5Cl seeing as we now know the oxidation state of cl is -5

    asked by Patel on January 5, 2013
  45. chemistry

    calculate the number of grams of co2 that can be absorbed by complete reaction with a solution that contains 5.00 g of sodium hydroxide

    asked by Anonymous on February 10, 2010
  46. Chem - Stoichiometry

    How many grams of sodium carbonate is required for a complete reaction with 1.00g of calcium chloride dihydrate? Help!

    asked by Erin on October 18, 2009
  47. chemistry

    For the following reaction, identify the substances oxidized, reduced and the oxidizing and reducing agents? 2SO2 + O2 --> 2SO3

    asked by mandy on October 30, 2013
  48. Ochem Lab

    Suggest an appropriate reducing reagents for the following substrates and predict the reaction:(1) 2-hexanone, (2)ethyl 4-nitrobenzoate, (3) hexanal

    asked by sady on February 9, 2009
  49. chemistry

    In the reaction of sodium metal with oxygen gas, the formula of the product will be ______________. Periodic Table

    asked by jon on July 19, 2011
  50. chemistry

    For the following reaction, identify the substances oxidized, reduced and the oxidizing and reducing agents? 2SO2 + O2 --> 2SO3

    asked by mandy on October 30, 2013
  51. Chemistry

    Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.

    asked by Kelly on June 7, 2010
  52. Chemistry

    The rate constant for this first order reaction is 0.0470 s-1 at 400 C. A TO Products After how many seconds will 11.0% of the reactant remain?

    asked by Josh on July 16, 2011
  53. chemistry

    HOw many calories of heat were produced by the reaction of 10ml water with the powder of two compartments (2x3.23 g) of the heater?

    asked by diana on October 25, 2010
  54. Chemistry

    If 25.0 mLs of 0.150M nitric acid was used, how many grams of barium carbonate would be required for complete reaction?

    asked by Jessica on July 2, 2013
  55. organic chemistry

    Assuming that an average 1 oz of black tea contains approximately 6 mg of caffeine, determine the experimental and %yield of the reaction.

    asked by Mary on April 7, 2010
  56. chem

    6FeO3----->4Fe304+02 DELTA H=+ 392kj If 2.83 g of Fe2O3 decomposed according to the above reaction , how many kj of heat would be exchanged with the enviroment?

    asked by lauren on October 16, 2009
  57. Chemistry

    Complete the following chemical reaction. Label any precipitate that forms. KCl(aq) + AgNO3 (aq) ¨KNO3 (aq)+AgCl(s)

    asked by Angela on August 7, 2012
  58. Chemistry

    A reaction at 3.24 atm consumes 5.10 L of a gas adiabatically (q = 0). Calculate the change in internal energy of the system (in kJ).

    asked by JUNDY on March 31, 2015
  59. chemistry

    What assumption did you make about the reaction of KMnO4 solution in those determinations where temp didn't change to allow k to be a constant?

    asked by Frank on September 6, 2015
  60. Chemistry

    Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.

    asked by Kelly on June 7, 2010
  61. Chemistry

    How could you prove that sodium hydroxide is a base without using litmus papes to test? Give an equation for the reaction

    asked by Divine on September 18, 2014
  62. Chemistry 12

    If two students compared their instantaneous reaction rates, would you expect their results to be the same? Explain (Hint: Think of tangent.)

    asked by Amy on September 9, 2013
  63. Chemistry

    Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.

    asked by Kelly on June 7, 2010
  64. chemistry

    Consider the reaction 3CH4(g)= C3H8(g)+ 2H2(g). Using data from Appendix C in the textbook, calculate delta G at 298 K.

    asked by Anonymous on February 14, 2012
  65. chemistry

    what is the relationship between reaction rate and shape of equilibrium graph in terms of concentration versus time?

    asked by sarah on April 18, 2010
  66. Chemistry

    Enter the net ionic equation, including phases, for the reaction of AgNO3(aq) with BaO(aq). Is it... Ag+O2--->AgO?

    asked by Chelsea on October 13, 2013
  67. physics

    What reaction would you get from francium and water in outer space and what if you added hydrogen to the experiment as far as being used for fuel for travel

    asked by scott on January 17, 2012
  68. Chemistry

    Hydrofluoric acid etches glass by reacting with the silica in it according to the following equation. H° = 54.5 kJ and S° = 436.5 J/K Calculate G° at 25°C for this reaction.

    asked by Melissa on November 10, 2010
  69. chemistry

    How many grams of Ni(OH)2 are produced from the reaction of 25.0mL of a 0.600M NaOH solution? NiCl2(aq)+2NaOH(aq)→ Ni(OH)2(s)+2NaCl(aq)

    asked by anatasya on November 5, 2013
  70. Chemistry

    Predict the product(s) and write a balanced equation for the following redox reaction: pentane (C5H12) + oxygen ---->

    asked by L on November 6, 2009
  71. Chemistry

    Identify the acid or base behavior of each substance in this reaction: H2PO4 + H2O H3O+ + HPO4-

    asked by Rachael on May 11, 2011
  72. chemistry

    what mass of salt can be produced from the reaction of 3.45 grams of sodium hydroxide and an excess of hydrochloric acid?

    asked by Alexis on April 27, 2010
  73. chemistry

    Which of the following is true for the gas phase reaction shown below? 4NH3(g) + 5O2(g) ¨ 4NO(g) + 6H2O(g), ƒ¢H = -0.905 kJ

    asked by cheryl on March 15, 2011
  74. Physical chemistry

    Ag(s) + Cl2(g) --> 2AgCl(s) ∆H and ∆S are 254.14kJ and –115.0J/K respectively. Calculate equilibrium constant, K for the reaction at 500K?

    asked by Alfred on August 8, 2011
  75. science, biology

    How might the chewing of food be related to the rate of a chemical reaction-digestion- that occurs in your body? explain

    asked by me on March 1, 2009
  76. Thermodynamics (Chemistry)

    Ag(s) + Cl2(g) --> 2AgCl(s) ∆H and ∆S are 254.14kJ and –115.0J/K respectively. Calculate equilibrium constant, K for the reaction at 500K?

    asked by Alfred on August 8, 2011
  77. chemistry

    How many grams of Mg(OH)2 would be produced from 4 mol KOH? if the balanced reaction is MgCl2 +2KOH arrow Mg(OH)2 + 2KCl?

    asked by barb on July 12, 2016
  78. Organic Chemistry

    what is wrong with the idea that the reaction of maleic acid with zinc and aqueous HCL would yield tetrahydrofuran?

    asked by Melody on October 30, 2010
  79. chemestry

    The element oxidized in the reaction described in PbO2 + 4HCl → 2H2O + PbCl2 + Cl2 is A. Pb. B. O. C. H. D. Cl. would the answer be A? please explain

    asked by louren on March 17, 2016
  80. physics

    Write down a half-reaction that explains the change that occurs on the surface of the copper spoon during electrolysis.

    asked by Dludlu on April 11, 2012
  81. ochem

    For a Grignard reaction, if you start with 3.97 mL of pure bromobenzene and 0.733 g of 1-phenylethanone, what is the theoretical yield of 1,1-diphenylethanol? Please help.

    asked by ochem on February 27, 2012
  82. Chem!!

    The value of ƒ¢H‹ for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 12.0 g of CO(g) reacts completely. 2CO(g) + O2(g) ¨ 2CO2(g)

    asked by Harlem on June 6, 2012
  83. english

    How might readers react if the topic sentences in an essay did not coincide with the supporting points, and why would their reaction be justified?

    asked by richard on March 28, 2011
  84. chemistry

    How many moles of oxygen can be obtained by the decomposition of 7.5 mol of reactant in the following reaction? 2KClO3 -> 2KCl + 3O2

    asked by Maria on January 20, 2011
  85. Chemistry

    What mass of glucose can be produced from a photosynthesis reaction that occurs using 21.2 mol CO2? Answer in units of g

    asked by John on January 21, 2013
  86. Chemistry

    What's the net ionic equation for the reaction: PH3(g) + O2(g) → P2O5(s) + H2O(g)? Please show your work so I can follow Thanks!!

    asked by Wade on May 7, 2018
  87. Chemistry

    For the following reaction, identify the substance oxidized, reduced and the oxidizing and reducing agents. 2SO2 + O2 ----> 2SO3

    asked by Adam on October 30, 2013
  88. chemistry

    Phosphorus (p4) burns in the air to give diphophorus pentoxide. what is the blance chemical equation for the reaction

    asked by Alexis A on October 29, 2013
  89. Chem Help Please!

    Give the full mechanism for the reaction of 1-bromo-3-methylpentane with methanol. I know you cant draw on here. but can you tell write it out with words? Thanks!

    asked by Kimberly on October 15, 2014
  90. chemistry

    Consider the following equation: CO + 2 H2 → CH3OH △H rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H2. how would i set this up?

    asked by s. on June 13, 2017
  91. Chemistry

    Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.

    asked by Bria on March 4, 2012
  92. chemistry

    If the initial concentration of AB is .250 M, and the reaction mixture initially contains no products, what are the concentrations of A and B after 75s?of XY after 5.0 X10^1s?

    asked by Ashton on February 22, 2010
  93. chemistry

    Kp for the reaction CO2(g) + C(s) 2CO(g) is 1.47 at 727°C. Calculate Kc at this temperature Answer A. 0.0179 B. 0.0246 C. 121 D. 87.7 E. 1.47

    asked by ken on July 22, 2012
  94. chem

    How many grams of NH3 are required to make 52.7g H2O in the following reaction : 4NH3+6NO->5N2+6H2O

    asked by bob on September 29, 2013
  95. chemistry

    Which term in the following reaction would not be included in the equilibrium expression? 2 Na3PO4 (aq) + 3 MgCl2 (aq) → 2 Mg3(PO4)2 (s) + 6 NaCl (aq)

    asked by barbra on November 5, 2010
  96. Science HELP!

    The body's reaction to information is to send these to the brain. A. Neurons B. Impulses C. Dendrites D. Synapse Is the answer B? Thanks

    asked by Anonymous on October 26, 2014
  97. Chemistry

    When the oxidation-reduction reaction shown here is balanced, how many electrons are transferred for each atom of copper that reacts? Ag^+ + Cu = Ag + Cu^2+

    asked by Danielle on June 26, 2012
  98. Chemistry

    Calculate the grams of NaNO3 required to produce 5L of oxygen at STP if the percent yield of the reaction is 78.4%?

    asked by Harry on May 2, 2014
  99. chemistry

    when you are given two half reactions and you are told to calculate net E^O, would you find the voltage for each reaction and subtract the two to get the answer?

    asked by Anonymous on May 20, 2010
  100. Physical Education help

    The body's reaction to information is to send these to the brain. A. Neurons B. Impulses C. Dendrites D. Synapse Is the answer B? Thank you

    asked by Anonymous on October 26, 2014