1. Physics

    a body moving with uniform acceleration travels 84m in First6s and 180m in next 5s . Find the initial velocity and acceleration of body

    asked by Anonymous on May 1, 2017
  2. Science

    What is the final pressure of the gas relative to its initial pressure when there is an increase in Kelvin temperature of a cylinder of compressed gas by a factor of 2.7?

    asked by Patrick on October 9, 2012
  3. physics

    a ball is thrown upward with an initial velocity. What is it's velocity to halfway to its highest point? the answer is the square root of 2, but how do u get that answer?

    asked by Anonymous on October 19, 2008
  4. Solution Stoichiometry

    If 75.0 mL of an AgNO3 solution reacts with enough Cu to produce .25g Ag by single displacement, what is the molarity of the initial AgNO3 solution if Cu(NO3)2 is the other product?

    asked by Anonymous on March 29, 2009
  5. physics

    A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.30 and the push imparts an initial speed of 4.0 m/s?

    asked by KatieC on October 18, 2010
  6. physics

    The velocity acquired by a body moving with uniform acceleration is 12m/sin 2 s and 18m/s in 4s. Find the initial velocity of the body?

    asked by Sahil on August 11, 2011
  7. Physics

    A stone is tossed upward at the moment a ball is dropped from a height of 25 meters. The stone's initial velocity is 25 m/s. At what height will the two meet?

    asked by Gigz on June 20, 2017
  8. phys

    An object with an initial velocity of 12 m/s west experiences a constant acceleration of 4 m/s^2 west for 3 seconds. During this time the object travels a distance of:

    asked by jay on February 9, 2014
  9. PHYSICS

    An athlete on a trampoline leaps straight up into the air with an initial speed of 9.3 m/s. Find the following: (b) the speed of the athlete when she is halfway up to her maximum height

    asked by Petrik on October 27, 2010
  10. physics

    A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 17 m/s. If the brick is in flight for 2.5 s, how tall is the building?

    asked by tiffany on September 20, 2010
  11. PHYSICS

    Charlie now moved onto the next hole where he hit the ball with an initial speed of 30 m s-1 and at an angle of 60 degrees. This time the ball lands with a speed of 17.3 m s-1. Use g = 9.8 m s-2.

    asked by PHYSICS on December 16, 2016
  12. physics

    A metal sphere is launched with an initial velocity of 1.5 m/s as it leaves the ramp. The end of the ramp is 1.2 m above the floor. Calculate the range of the sphere.

    asked by Christian on October 14, 2014
  13. Physics

    Two identical objects of the same mass and at the same initial temperature cool off. If object A cools off faster than object B, what can you say about the specific heats of the two objects?

    asked by Anonymous on January 14, 2015
  14. Math, Science

    A woman throws a 0.25 kg ball straight up in the air with a initial speed of 15 meters per second. how far above the woman will the ball go before it starts coming back down?

    asked by Wyatt Bendickson on April 2, 2015
  15. high school physics

    a ball is thrown hirizontally from the roof of a building 45.0 meters tall and lands 24.0 meters from the base. what was the ball's initial speed

    asked by Michael on October 20, 2008
  16. physics

    A brick is thrown upward from the top of a building at an angle of 35° to the horizontal and with an initial speed of 14 m/s. If the brick is in flight for 3s, how tall is the building?

    asked by TNT on February 17, 2018
  17. physics

    a stone is thrown vertically upward with an initial velocity u from the top of tower, reaches the ground with a velocity 3u. what is the height of tower?

    asked by pavatharani on July 13, 2011
  18. physics

    a ball is thrown vertically into the air because of air resistance its speed when it returns to its staring level compared to it initial speed is what?

    asked by Anonymous on February 6, 2011
  19. Physics

    A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 17 m/s. If the brick is in flight for 3.3 s, how tall is the building? m

    asked by Crown on September 12, 2012
  20. phy

    A baseball is thrown horizontally from the top of a cliff 50 meters up. The initial velocity of the ball is 10 m/s. How far from the base of the cliff will the ball land?

    asked by Anonymous on March 5, 2014
  21. chem

    What is the final temperature (degrees celcius) of 1.36g of water with an initial temperature of 23.0degrees celcius after 6.420J of heat is added to it?

    asked by Chironjit on November 19, 2012
  22. physics

    A brick is thrown upward from the top of a building at an angle of 40° to the horizontal and with an initial speed of 12 m/s. If the brick is in flight for 2.5 s, how tall is the building?

    asked by Anonymous on September 25, 2010
  23. Physics

    A ball rolls off the edge of a table that is 1.03 m high, and it strikes the floor at a point 1.40 m from the base of the the table. What is the initial speed in m/s of the ball?

    asked by Asia on November 14, 2012
  24. Calculus Physics

    A particle is subject to a time-dependent force: F(t)=5t√. If the particle's mass is 7 kg, what will its velocity be at t=6.7 seconds, assuming its initial velocity at t=0 is equal to 0.

    asked by danny on February 19, 2015
  25. Physics

    A cork shoots out of a champagne bottle at an angle of 39.0 degrees above the horizontal. If the cork travels a horizontal distance of 1.10 m in 1.40 s, what was its initial speed?

    asked by Abby on February 16, 2010
  26. Physics

    A particle moving with uniform acceleration has initial velocity u. With the aid of a velocity time graph, show that the displacement s after time t is given by: s=ut+1/2*gt^2

    asked by Lynn on July 4, 2015
  27. Chemistry

    Which reaction had a negative T value: Citric Acid and baking soda or metal and hydrochloric Acid

    asked by Anonymous on February 4, 2012
  28. chem

    If 507 g FeCl2 were used up in the reaction FeCl2 + 2NaOH Fe(OH)2(s) + 2NaCl, how many grams of NaCl would be made?

    asked by gabby on February 25, 2013
  29. Chemistry

    Draw the product(s) of the following reaction CH3-CH2-C(triple bond)C-CH2 ---------> ? (Na/NH3)

    asked by anon on October 27, 2016
  30. Chemistry

    Calculate the temp at which DG for a reaction (with/ DH= -19.9 kJ/mol and DS= -55.5 J/k-mol) will be equal to 0. Is the correct answer -358.56 K?

    asked by Anonymous on April 11, 2010
  31. Physics

    A car is traveling at 24.4 m/s. If the driver has a reaction time of 1 second, what will be his stopping distance if his car slows down at 8 m/s2?

    asked by Joseph on September 20, 2013
  32. English

    where can i find information on The Most Hateful Words by Amy Tan? Information such as a summary or reaction about it

    asked by Bryan on October 22, 2008
  33. CHEM

    How many liters of O2 will react with 100 liters of H2 according to the gas phase reaction: O2 + 2H2 ------2H2O

    asked by MICHELLE on May 3, 2013
  34. chemistry

    same question as before What is the Kc for the following reaction at equilibrium at 800∘C if [CO2]= 0.030M ? CaCO3(s)⇌CaO(s)+CO2(g)

    asked by anynomous on November 12, 2013
  35. Chemistry

    How has the equilibrium been modified in Haber Process? what is the heat value for the following exothermic reaction : Hb(aq) + O2(aq) = HbO2(aq) + (Heat ?)

    asked by krish on November 28, 2011
  36. chemistry

    How many grams of O2 are needed to produce 45.8 grams of Fe2O3 in the following reaction? 4Fe(s)+3O2(g) - 2Fe2O3(s)

    asked by richard w on February 27, 2013
  37. chemestry

    How many grams of O2 are needed to produce 45.8 grams of Fe2O3 in the following reaction? 4Fe(s)+3O2(g) - 2Fe2O3(s)

    asked by richard on February 27, 2013
  38. Chem

    A reaction of 48.5 g of Na and 53.7 g of Br2 yields 55.4 g of NaBr. What is the percent yield? 2Na(s)+Br2(g)--->2NaBr(s)

    asked by sarah on February 11, 2018
  39. psychology

    reaction paper about the door to door movie? true story by bill porter

    asked by abigael gamboa on September 24, 2011
  40. Chemistry

    10% of a sample reacts in 25 s. If the reaction follows first order kinetics, how long would it take for half the sample to react?

    asked by mandy on May 4, 2010
  41. Chemistry 104

    Calculate Eo (reduction potential) for the following balanced reaction. NiO2 + 2H2O + 2Fe(OH)2 Ni(OH)2 + 2Fe(OH)3

    asked by Sophie on May 4, 2013
  42. Chemistry 104 PLEASE HELP ME!!

    Calculate Eo (reduction potential) for the following balanced reaction. NiO2 + 2H2O + 2Fe(OH)2 Ni(OH)2 + 2Fe(OH)3

    asked by Sophie on May 4, 2013
  43. chemistry

    C3H8+5 o2 - 3CO2 +4H2O the reaction If I have 56.7 liters of o2 reacted, how many liters of H2O were produced?

    asked by kia on May 6, 2016
  44. chemistry

    Write down a balanced acid-base reaction given the following reactants Reactants: NaOH(aq) + HCl(aq)

    asked by jonh on February 11, 2011
  45. Chemistry

    Consider the Unbalanced Reaction: Al2O3(s) + CO(g) → Al(s) + CO2(g) Estimate ∆G at 298 K if 7.1 moles of Al2O3(s) is reacted.

    asked by Zachary on July 5, 2017
  46. chem

    determine how many grams of N2 are produced from the reaction of 8.75 g of H2O2 and 5.43 g of N2H4. 2H2O2+N2H4 4H2O+N2 g N2?

    asked by Rachel on February 20, 2018
  47. science

    Proper condition for maximum yei of so3 in reaction 2so2+o2=so3+HEAT

    asked by muna on February 6, 2017
  48. chemistry

    Consider the following reaction: 2 B5H9 + 12 O2 => 5 B2O3 + 9 H2O How many grams of O2 are needed to make 432.7 g of H2O?

    asked by michelle on November 16, 2014
  49. Chem

    3O2(g)---> 2O3(g) At a given instant, the reaction rate in terms of [O2] is 2.17x10^-5 mol/L*s. What is it in terms of O3?

    asked by Mike on April 6, 2010
  50. Chemistry

    how many grams of ammonium sulfate is formed from the complete reaction of 700 grams of ammonie

    asked by Stephanie on March 17, 2013
  51. CHEM

    A reaction of 48.5 g of Na and 53.7 g of Br2 yields 55.4 g of NaBr. What is the percent yield? 2Na+Br2 2NaBr

    asked by Rachel on February 20, 2018
  52. science

    If solid iodine sublimes to produce iodine gas:write down the equation for the reaction

    asked by vhahangwele on April 23, 2013
  53. physical science

    In terms of energy, the general chemical equation AB+CD+energy = AD+CB represents a (an)_________ reaction.

    asked by Jason on January 30, 2013
  54. Chemistry

    If you begin with 34.4 grams of ammonia how many grams of hydrogen and nitrogen can you produce in a decomposition reaction

    asked by Kyla on February 14, 2017
  55. Chemistry

    In this reaction, 4.58 L of O2 were formed at 745mm Hg and 308 K. How many grams of Ag2O decomposed. 2 Ag2O----> 4 Ag + O2 Please help I'm very confused

    asked by Monique on October 17, 2011
  56. Chem II

    For the reaction H2+I2, Kc=55.3 at 700K. In a 2. L flask containing an equilibrium mixture of three gases, there are .056g H2 and 4.36 g I2. What is the mass of the I2 in the flask?

    asked by Jeff on January 31, 2011
  57. Chemistry

    3O2(g)---> 2O3(g) At a given instant, the reaction rate in terms of [O2] is 2.17x10^-5 mol/L*s. What is it in terms of O3?

    asked by Amy on April 4, 2010
  58. CHEMISTRY

    AT A CERTAIN TEMPERATURE, THE REACTION CO(g) + 2H2(g) CH3OH (g) has Kc = 0.500 CO= 0.180 M H2= 0.220 M WHAT IS THE CONCENTRATION OF CH3OH?

    asked by HELP IM LOST on October 16, 2011
  59. Biology

    In the following chemical reaction, what is carbon dioxide (CO2)? 12 H20 + 6 CO2 -> 1 glucose molecule + 6 O2

    asked by Michelle on March 2, 2009
  60. Chemistry

    Hi, i would like to know how hydrogen can be manufactured from methane using a nickel catalyst. What must be added to methane in the reaction? +Ni CH4 + ??? -----> H2 + ???

    asked by Monica on September 23, 2009
  61. Chemistry

    The standard enthalpy of formation of H2O (l) is -285.8 kJ/mol. Calculate ∆E° for the following reaction. H2O (l) → H2 (g) + 1/2 O2 (g)

    asked by Mahnoor on November 16, 2014
  62. chemistry

    How many moles of H2S would we expect to be formed by reaction if 3.50 moles of HNO3 reacted completely?

    asked by wendy on February 9, 2015
  63. CHEM

    Consider the reaction, 3 NO2(g) + H2O(l) ® 2 HNO3(aq) + NO(g), where DH = – 137 kJ. How many kilojoules are released when 92.3 g of NO2 reacts?

    asked by jerry on March 22, 2012
  64. chemistry

    How many mL of 0.40M NaOH are need to neutralize 30.0 mL of 0.50 M H2SO4 according to the following reaction. 2NaOH(aq) + H2SO4 (aq)----Na2SO4 (aq) + 2H2O(l)

    asked by Sara on March 21, 2013
  65. Chemistry

    Consider the reversible reaction: A(g)-2B(g)At equilibrium, the concentration of A is 0.381 M and that of B is 0.154 M. What is the value of the equilibrium constant, Keq?

    asked by Chemistry Chick on November 30, 2011
  66. physical chemistry

    the rate constant for a reaction at 30 degrees is found to be exactly twice the value at 20 degrees. calculate the activation energy

    asked by ntsika on March 14, 2016
  67. HELP!! PLEASE CHEM LAB

    When doing a titration, for example acid base, how do you know how much base to measure out and how much analyte to pour in the reaction flask?

    asked by che on December 1, 2015
  68. chem

    Sb2S3(s) + 3 Fe(s) 2 Sb(s) + 3 FeS(s) When 14.7 g Sb2S3 reacts with an excess of Fe, 9.84 g Sb is produced. What is the percent yield of this reaction? %

    asked by Anonymous on February 10, 2012
  69. chemistry

    Would the reaction of NaOH and HCl be arrhenius, bronsted-lowry, or lewis? What about NaOH and H2SO4?

    asked by Amy on June 9, 2010
  70. Chemistry

    How many milliters of 0.500 M magnesium nitrate can be produced from the reaction of 35.5 grams of magnesium bromide.

    asked by Arlene on April 3, 2011
  71. chemistry

    how many moles of oxygen (molecule) are required for complete reaction with 2.1080 moles of iron?

    asked by Anonymous on September 26, 2010
  72. farewell to arms english

    What is cathirines first reaction when she learns that henry is in the italian army?what was her decription of the italian front?

    asked by taianna holguin on December 19, 2009
  73. Chem

    What determines whether 2-bromobutane undergoes an Sn1 or an Sn2 reaction how would you favor SN2 formation?

    asked by Jason on November 17, 2008
  74. Chemistry

    Calculate ∆Ssurr when a reaction having each of the following changes in enthalpy: a. ∆Hrxn0 = -287 kJ; 298 K. b. ∆Hrxn0 = 127 kJ; 77 K.

    asked by Melanie on April 18, 2013
  75. chemistry please help!!

    what is the net ionic equation for the reaction between a strong acid and a strong base? what does it mean by this question?/ (: thanks.

    asked by yvette on March 5, 2013
  76. chemistry

    What's the net ionic equation for the reaction: PH3(g) + O2(g) → P2O5(s) + H2O(g)? Please go step by step:)

    asked by Katie on May 7, 2018
  77. Chemistry

    How many milliliters of 1.5 M HCl must be transferred from a reagent bottle to provide 25g HCl for a reaction?

    asked by Anonymous on September 9, 2013
  78. Chemistry

    A reaction uses 4.5 grams of oxygen and an excess of nitrogen. How many grams of dinitrogen pentoxide are produced?

    asked by Billy on October 8, 2014
  79. science- chemistry

    what is the rate of reaction, if rate of consumption of iodide is 2.130x10^-5? 5I-(aq)+IO3-(aq)+6H+(aq) 3I2(aq)+3H2O(l)

    asked by pookie on May 10, 2010
  80. College Chemistry

    The value of ΔG°f at 25°C for gaseous mercury is 31.85 KJ/mol. What is the vapor pressure of mercury at 25°C? [Hint: calculate the Kp for the reaction Hg(l)=Hg(g)]

    asked by alice on December 6, 2010
  81. chemistry

    What type of chemical reaction is this equation? CuO (s) + [2H+ + SO4 2-](aq) [Cu2+ + SO4 2-] (aq) + H2O (l)

    asked by Anonymous on March 29, 2017
  82. Chemistry

    Once it is balanced, in the following chemical reaction NaHCO3(s) Na2O(g) + CO2(g) + H2O(l), what is the coefficient for Na2O (s)? a. 1 b. 2 c. 3 d. 4

    asked by Pennelope on November 2, 2009
  83. chem

    What happens to a catalyst in a reaction? a. it remains unchanged b. it is incorporated into the products c. it is incorporated into the reactants d. it evaporates

    asked by Terri on December 30, 2011
  84. chemistry

    If 35 mL of H2SO4 is titrated to the equivalent pint with 45 mL of 0.30M NaOH, what is the molarity of the H2SO4 before and after the reaction?

    asked by Casey on April 12, 2017
  85. Chem

    A lake may be polluted with Pb2+ ions. what precipitation reaction might you use to test for the presense of Pb2+?

    asked by Josh on October 9, 2011
  86. Chemistry

    The Ka value of nitrous acid, HNO2 , is 4.0 × 10¯4 . What is the equilibrium constant for the reaction; NO2¯ + H2O HNO2 + OH¯ ?

    asked by Thomas on February 17, 2011
  87. Chemistry

    if the rate of a certain reaction is 6M/hr at 273K, what would be the predicted rate at 278k with activation 30kj/mol

    asked by Anonymous on August 11, 2015
  88. Chemistry

    how many grams of ethylene (C2H4) are required for the complete reaction of 31.7 grams of hydrogen gas?

    asked by Vilma on October 2, 2012
  89. Chemistry

    What is the mass, in grams, of NaCl formed from the reaction of 2.75 mL of a 6.00 M Na2SO4 solution and 8.30 mL of 2.5 M solution of HCl?

    asked by Jane on November 24, 2011
  90. Chemistry-Stoichiometry

    what is the limiting reactant if 0.10 moles Fe and 0.16 moles O2 react according to the reaction 4Fe +3O2 -> 2Fe2O3?

    asked by Barbara on October 19, 2013
  91. chemistry

    What is the oxidizing agent in the following reaction? Cl2 (g) + 2Na+ (aq) + 2Br- (aq) --> 2Na+ (aq) + 2Cl- (aq) + Br2 (l)

    asked by mary on November 9, 2011
  92. Science

    The number of moles of H2O produced in reaction of 50ml 1.0 M HCl and 50mL 1.0 M Naoh

    asked by Amanda on June 24, 2008
  93. Chemistry

    The Ka value of nitrous acid, HNO2 , is 4.0 × 10¯4 . What is the equilibrium constant for the reaction; NO2¯ + H2O HNO2 + OH¯ ?

    asked by Thomas on February 18, 2011
  94. chemistry

    Co2(aq)->Co2(g) calculate the free-energy change for this reaction at 25 degrees Celsius.

    asked by mar on February 1, 2015
  95. Chemistry- Stoichiometry

    "Why must a chemical reaction be balanced before it can be used in stoichiometry?" I mean, I get it, that the equation will be off if it doesn't start out balanced, but, why? How do I phrase that?

    asked by Shelby on September 28, 2007
  96. PLS HELP URGENT

    Only one of the following reactions occurs. HCl + F HF + Cl For the one that does occur which side is favoured? Explain WHY the other reaction will not occur.

    asked by Jules on May 27, 2014
  97. Chemistry

    What is the theoretical yield of ethyl chloride in the reaction of 19.2g g of ethylene with 48g g of hydrogen chloride?

    asked by Allison on November 3, 2013
  98. Chemistry

    Is the unbalanced reaction for copper + silver nitrate Cu + AgNO3 = Cu(NO3)2 + Ag or Cu + 2AgNO3 = Cu(NO3)2 + Ag?

    asked by Anonymous on February 5, 2016
  99. chemistry

    Explain how mixing red paint and white paint could be used as an analogy for a neutralization reaction.

    asked by Anonymous on October 18, 2012
  100. ap chemistry

    Under certain conditions, the reaction 3A + 2B -> 4C was observed to proceed at a rate of 0.00348 M· s−1. What was the corresponding rate of change in reactant A?

    asked by gabriella on November 7, 2013