1. Chemisrty

    Determine which law is appropriate for solving the following problem. What volume will 1.56 liters of a gas at 27°C and 745 mmHg of pressure occupy at 100°C and 700 mmHg of pressure? Law used: Boyle's Law Charles' Law Combined Gas Law

    asked by Angel on October 19, 2011
  2. chemistry

    Ammonia is often produced by reacting nitrogen gas with hydrogen gas. How many liters of ammonia gas can be formed from 12.9 L of hydrogen gas at 93.0°C and a pressure of 43.5 kPa? (Assume an excess amount of nitrogen gas.) I have absolutely no idea how

    asked by kendall on March 17, 2015
  3. Chemistry

    At a deep-sea station that iss 200. m below the surface of the Pacific Ocean, workeres live in a highly pressurized enviornmetn. how many liters of gas at STP must be compressed on the surface to fill the underwater enviorment wiht 2.00*10^7 L of gast a

    asked by Miley on March 4, 2008
  4. English

    IS THIS PARAGRAPH ACCEPTABLE FOR THE INFORMATION REQUIRED? Your goal is to persuade your cousin to apply for the job. You e-mail her a paragraph explaining the specifics of the job and the reasons she should apply. You want to convince her that she has the

    asked by Evelyn on January 18, 2013
  5. chemistry

    The freezing point of a solution is A. lower than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstructon by solute particles.. B. lower than the freezing point of

    asked by ryan on October 4, 2010
  6. Chemistry

    The freezing point of a solution is A. lower than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstructon by solute particles.. B. lower than the freezing point of

    asked by Blair on August 5, 2008
  7. Spanish

    Spanish help please.....!!!! _________________ The directions I was given was this: Choose the word that correctly completes the sentence (a; para; que); or select "No word is required". _________________ I'm stuck on all of the ones I was given. Pls help

    asked by guitarpick03 on March 27, 2018
  8. Algebra

    3. In his propane oven, he bakes two baking sheets with 24 Peanut Butter cookies on each sheet, two baking sheets with 18 Chocolate Chip cookies on each sheet, and one baking sheet with 10 Peanut Butter cookies and 12 Chocolate Chip cookies Write an

    asked by Anonymous on August 20, 2011
  9. Economic

    1.The most important tool the Fed has to control the money supply is a. changing the federal funds rate. b. changing the required reserve ration. c. open market operations. d. changing the discount rate 2. Banks use their excess reserves to a. make new

    asked by Bree on June 18, 2010
  10. math

    How many liters of a 2.5% bleach solution must be mixed with a 10% bleach solution to produce 600 ml of a 5% bleach solution?

    asked by Ali on September 8, 2014
  11. math

    A pharmacist has an 18% alcohol solution and a 40% alcohol solution. How much of each should he mix together to make 10 liters of a 20% alcohol solution?

    asked by Russian buddy on March 6, 2017
  12. Physics

    Two 0.53-g basketballs, each with a radius of 17 cm, are just touching. How much energy is required to change the separation between the centers of the basketballs to 1.1 m? (Ignore any other gravitational interactions.) How much energy is required to

    asked by Cooper on November 9, 2011
  13. managment science

    Supposed you have been hired as a Marketing Manager in a Multinational Company which is dealing in high tech products. Company wants to launch a cell phone in the market which can measure the Sugar level and Heart beat of the users. Since, it is a

    asked by mehboob on January 11, 2011
  14. Chemistry

    A 25.00 ml sample of a standard solution containing 1 g of CaCO3/L required 25.20 ml of EDTA to fully complex the Ca present. Calculate the volume of EDTA stoichiometrically equivalent to 1.0 mg of CaCO3. From the volume of EDTA required in titrating the

    asked by Anonymous on March 15, 2010
  15. General Chemistry : for Nursing

    Im Having a really Hard time with this problem :( ---> A sample containing 5.60g O2 gas has a volume of 31.0L . Pressure and temperature remain constant. 1 .) Oxygen is released until the volume is 8.00L . How many moles of O2 are removed?

    asked by Shayla on November 12, 2013
  16. Chemistry!!

    How do I go about doing this question? How much heat energy is involved when 5.58g of Fe metal reacts with excess oxygen to produce Fe2O3? Do you need the equation, and if so, what would tha be? Fe + O2 > Fe2O3? I don't think that is right though. And

    asked by Lulu on November 22, 2008
  17. Chemistry

    How many grams of oxygen can be produced by heating 10.0g of mercury (II) oxide? Sulfuric acid is added to 8.10g of magnesium, how many grams of hydrogen are set free? Answered abovd.

    asked by Beautiful on March 5, 2007
  18. Chemistry

    a mixture of .0285g of H and .0141 mol of oxygen in a closed container is sparked to initiate a reaction. How many grams of H2O can form?Which reactant is in excess and how many grams remain?

    asked by Tyler on September 28, 2011
  19. Chemistry 3A

    C2H2(g)+ 5/2o2(g)-> 2Co2(g)+ H2o(g)+ 1255.8KJ how many grams of C2H2 are reacted when 310 KJ of heat are released? I left the oxygen (O) lowercase in the equation so it does not get mixed up with zero.

    asked by Gurjot on December 11, 2012
  20. Chem

    2H2(g)+O2(g) ---> 2H2O(l) delta H= -572kJ/mole of O2 Calculate the amount of heat evolved when 10g of hydrogen are burned in excess oxygen. Can someone please explain step by step? =D

    asked by Shirley on July 16, 2012
  21. Chemistry

    Please help me write these two balanced equations. Dissolution of rust, Fe2O3, by sulfuric acid. and Ammonium nitrite reacts with oxygen to form ammonium nitrate. Any help would be awesome, thankyou.

    asked by Susan on April 30, 2014
  22. chemistry

    the reaction of aluminum metal (Al) with oxygen (O2) forms Al2O3. What is a balanced equation for this redox reaction. What are two half reactions to show how many electrons are gained or lost by each species?

    asked by cathy on April 11, 2010
  23. EXAM TMRW

    Calculate the energy in kJ/mol of light with a wavelength of 360 nm. 9.17 * 10^-43 J/mol Oxygen gas at 34.5 °C expands from 34.5 L to 45.7 L against a constant pressure of 750 mmHg. What is the work done in joules by the system? 1.13*10^3 J

    asked by plz chk my answers for Chemistry on December 1, 2008
  24. Chemistry

    2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(g) In the equation, if 14 L of ethane (C2H6) and 14 L of oxygen (O2) combined and burned to completion, which gas will be leftover after the reaction, and what is the volume of that gas remaining?

    asked by Giselle Meza on October 7, 2015
  25. de Broglie Wavelength

    The presence of oxygen atoms on the surface results in auger electrons with a kinetic energy of approximately 505 eV. What is the de Broglie wavelength of this electron? [KE= (1/2)mv^2; 1 electron volt (eV) = 1.602*10^-19 J]

    asked by Kyle on November 13, 2009
  26. science

    The process in which an animal’s cells use oxygen and digested food molecules to release the energy in food is called a. Breathing b. cellular respiration c. diffusion d. gas exchange

    asked by Anonymous on October 8, 2015
  27. Chemistry

    The alcohol in gasohol burns according to the reaction C2H5OH(l) + 3O2(g) --> 2CO2(g) + 3H2O how many grams of water are produced when 3.0 moles of C2H5OH are burned in an excess of oxygen gas?

    asked by Lana on October 15, 2012
  28. chemistry

    The combustion reaction of acetylene gas is represented by this equation: 2C2H2(g) + 5 O2(g) ==> 4CO2(g) + 2H2O(g) How many grams of CO2 and grams of H2O are produced when 52.0g C2H2 burns in oxygen?

    asked by Danny on March 22, 2010
  29. science

    the process in which an animal's cells use oxygen and digested food molecules to release the energy in food is called 1. breathing 2. cellular respiration 3. diffusion*** 4. gas exchange

    asked by Anonymous on February 9, 2015
  30. science

    Ions are electrically charged particles that are formed when certain compounds are dissolved in water. These solutions will conduct electricity. The Swedish scientist Svante Arrhenius coined the term ion (which means wanderer) to explain why solutions of

    asked by courtney on April 8, 2010
  31. physics

    A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 7.8 rad/s; 60 radians later, its angular speed is 19 rad/s. Calculate (a) the angular acceleration (rad/s2), (b) the

    asked by kristy on November 13, 2013
  32. college chemistry

    Comparing the boiling points of: A) C3H8 B) C5H12 C) C2H5OH and identify the folowing statements as either True or False: Dispersion forces only for (A) Boiling point (C) > Boiling point (A) (B) exhibits hydrogen bonding Boiling point (C) < Boiling point

    asked by Stefanie on November 12, 2010
  33. physics/biology

    Determine the number of uncompensated ions (both total number and as a percentage of the bulk ions) required to establish a charge of 100mV across a membrane of a spherical cell that is 25 μm in diameter. Assume that the total number of ions inside and

    asked by Anna on January 30, 2007
  34. physics/biology

    Determine the number of uncompensated ions (both total number and as a percentage of the bulk ions) required to establish a charge of 100mV across a membrane of a spherical cell that is 25 ƒÊm in diameter. Assume that the total number of ions inside and

    asked by Ann on January 30, 2007
  35. Physics - Torque

    Consider a rectangular block of mass 30kg, height= 3m, length = 2m. A force F is applied horizontally at the upper edge. The acceleration of gravity is 9.8 m/s^2. 1)What is the minimum force required to start to TIP the block? 2)What is the minimum

    asked by Belle on April 22, 2007
  36. chemistry

    How do you find the number of moles required to neutralize acids?

    asked by diasy on May 3, 2018
  37. Chemistry

    The amount of k2Cr2O7 required to prepare 100 ml of its 0.05 N solution

    asked by Sarika on February 1, 2018
  38. Chemistry

    How many milliliters of 0.326 M HCl would be required to titrate 5.48 g KOH?

    asked by Grace on April 2, 2014
  39. Chemistry

    how many moles of chlorine gas are required to react with 164 g of Br

    asked by James on December 6, 2011
  40. Chemistry

    How much heat is required to convert 6.78g of ice at − 14.0∘C to water at 24.0∘C ?

    asked by Kirsten on March 16, 2015
  41. Chimstery

    What mass of CO is required to react with 146 g of iron (|||) oxide?

    asked by Ghada on February 3, 2015
  42. child day care

    of the forms used in a child care program which of the following would be required for the children?

    asked by laura on October 18, 2011
  43. essential web publishing skills

    which of the qualities required for a good document is violated in the following passage?

    asked by Anonymous on September 21, 2014
  44. Chemistry

    How many grams of NaCL are required to make 250ml of a 0.4M solution?

    asked by Jessi on April 22, 2009
  45. Chemistry

    How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?

    asked by Danny on March 25, 2010
  46. physics

    What emf is required to cause 12 amperes to flow through a resistance of 7.2 ohms?

    asked by nabil on May 17, 2011
  47. Chemistry HELP URGENT PLEASE!!!

    what current (in amperes) is required to plate out 2.85 g of Cr from a Cr^3+ solution in a period of 2.50 hr?

    asked by Maho on March 17, 2014
  48. Chemistry Help!!

    How many joules of heat are required to melt 60.5g of ice at 0 degrees C?

    asked by Maci on October 12, 2011
  49. Inorganic chemistry

    What change in coulombs, is required to deposit 0.301 g Cu(s) from a solution of Cu^2+(aq)

    asked by Steve on April 12, 2009
  50. Chemistry

    What weight of NaOH would be required to prepare 3000ml of a 2.5M solution?

    asked by Jessi on April 22, 2009
  51. Science

    how much heat is required to change 5 grams of iron to 10c

    asked by joe on October 13, 2011
  52. Chemistry

    How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?

    asked by Danny on March 25, 2010
  53. science

    A 250 kg object is acceelerating at 2.8 m/s2. What force was required to achieve this?

    asked by Kelsey on April 6, 2011
  54. Physics

    How much force is required to accelerate 7.0 g object at 11000 "g's" in a centrifuge?

    asked by Millie on October 30, 2011
  55. Social Studies

    in order for a bill to become a law, is a unanimous decision required

    asked by Student on March 4, 2015
  56. chemistry

    how much ml of concentrated hci required to make 0.5N hcl solution? /

    asked by Ashwin on March 24, 2015
  57. chemistry

    Calculate the current in ampheres required to produce 15.0g in 2 hrs.

    asked by Umar on May 21, 2014
  58. phys

    How many kcal of heat are required to vaporize 25.0 kg of water at 100C?

    asked by Dennis on December 15, 2011
  59. Clinical Calculations

    What weight of NaOH would be required to prepare 3000 ml of a 2.5M solution?

    asked by Tamaka on November 9, 2009
  60. Chemistry

    What is the mass of glucose required to prepare 500ml of 1M solution

    asked by Merin rose on August 5, 2018
  61. Chemistry

    How many moles of LiF would be required to produce a 12.0 M solution with a volume of 10.5 L?

    asked by Alek on November 11, 2014
  62. Chemistry stoichiometry

    How many grs of H2SO4 is required to obtain 0.1 molal of 1 kg solution?

    asked by Anonymous on August 10, 2017
  63. Science

    The t1/2 for a first order rxn is 20 s.the time required for 99.9 percent decomposition is

    asked by Uzma Amin on August 11, 2018
  64. chemistry

    What volume in mL of a 1.06 M NaOH solution is required to neutralize 12 g of HCl?

    asked by Hani on November 22, 2011
  65. Ap Chemistry

    HOw much energy is required to ionize a mole of Hydrogen atoms?

    asked by Ivy on September 9, 2011
  66. Chem

    How many grams of O2 are required to burn13.0g of acetylene? The answer I got is 40gO2 is this right.

    asked by Kelsey on April 25, 2011
  67. physics

    What is the minimum speed required to simulate artificial gravity?

    asked by grey on June 5, 2014
  68. what volume of 0.4 M HCl is required to neutralize

    what volume of 0.4 M HCl is required to neutralize 100.0 mL of 0.3 M LiOH?

    asked by Sunshine on July 29, 2009
  69. Math

    Required to Prove the following trig identity: (cos2x)^2 + (sin2x)^2 = 1

    asked by Halle on June 18, 2009
  70. chemistry

    How many mL of 0.0500 M EDTA are required to react with 54.0 mL of 0.0190 M Ca2+?

    asked by mike on November 6, 2013
  71. Chemistry

    Estimate the amount of 1.0m NaOH in ml required to neutralize 5.0g of KHP

    asked by Jossy on October 20, 2014
  72. Stoichiometry

    How much 6M HCl and NaHCO3 are required to make 1 quart of CO2?

    asked by Piehead on June 1, 2011
  73. chemistry

    how many grams of glucose are required to produce 50mL of 0.1 m solution?

    asked by kelsie on December 3, 2008
  74. science

    How many moles of li2so4 is required to prepare 300ml of a 0.5 m solution

    asked by ernstcia on March 31, 2015
  75. CHEMISTRY

    What volume of 2.5*10^-2 M H2SO4 is required to neutralize 125mL if 0.03 M KOH

    asked by CHEMISTRY LEARNER on May 16, 2018
  76. Calculus

    How many terms are required in the series (-6) + (-12) + (-24)... to add to a sum of -378? How do I do this?

    asked by Anonymous on September 19, 2011
  77. Chemistry

    How much heat is required to boil 90.0g of water at its boiling point?

    asked by Chemistry Boiling point on April 16, 2015
  78. criminal justice

    Why might a paramilitary style raid be necessary when deadly force is required?

    asked by patiance on November 8, 2013
  79. Physics

    How much work is required to lift a 10 kg object above your head (approximately 1.3 m)?

    asked by galina on July 11, 2018
  80. Physics

    how much energy is required to change 40 g of ice at -10 C to steam at 110 C?

    asked by Sam on January 13, 2014
  81. Science

    How many ml of .150 M Na2CrO4 will be required to oxidise 40 ml of .05M Na2S2O3

    asked by Kirti on November 25, 2017
  82. Careers

    What are registered nurses required to do? Everyone is saying it is intense labour work. Thanks :)

    asked by Lena on December 1, 2009
  83. math

    The least number of pens required to make complete sets of 20, 24, 30, are?

    asked by mr.smarty pants on June 8, 2014
  84. chemistry

    How many grams of potassium iodide, KI, are required to make 2.0 L of a 0.1M solution?

    asked by Blake on October 29, 2016
  85. chenistry

    how many calories are required to melt a 135.0g sample of ice at 0.0 c

    asked by barb on September 5, 2012
  86. Chemistry

    How many moles of electrons are required to produce 23.8 g Cu from a CuSO4 solution?

    asked by Angel on May 2, 2010
  87. physics

    How much time is required for sound to travel 1.4 km through air if the temperature is 30.0 c

    asked by Melissa on May 20, 2012
  88. criminal justice

    What are the requirements and the mandates in pretrial measures required by law?

    asked by gina on May 20, 2012
  89. biology

    how is it possible for an enzyne to lower the required energy of activation for a reaction.

    asked by jessi on December 14, 2010
  90. physics

    How much work is required to lift a 5.2-kg concrete block to a height of 3.1 m?

    asked by kim on September 17, 2016
  91. physics capacitor

    What voltage is required to store 8.0 x 10-5 C of charge on the plates of a 6.1-μF capacitor?

    asked by help on January 19, 2013
  92. Chemistry

    What mass of protons would be required to just neutralize the charge of 1.5 g of electrons?

    asked by Evy on September 22, 2010
  93. Physics

    How much energy is required to ionize hydrogen when it is in the state with n = 6? (answer in eV)

    asked by Eduardo on March 14, 2016
  94. chemistry

    How many grams of AgNo3 are required to make 25 mL of a .80M solution?

    asked by Barbara on December 10, 2010
  95. chemistry

    What mass of protons would be required to just neutralize the charge of 1.1 g of electrons?

    asked by jenny on September 14, 2015
  96. Chemistry

    Help? How many moles of LiF would be required to produce a 2.5 M solution with a volume of 10.5 L?

    asked by Victoria on August 19, 2013
  97. chemistry

    What mass of protons would be required to just neutralize the charge of 2.7 g of electrons?

    asked by blahh on September 20, 2010
  98. Chemistry

    What volume of O2 at 912mmHg and 33 degrees C is required to synthesize 11.0 mol of NO?

    asked by Kelsey on November 18, 2010
  99. Chemistry

    How many milliliters of 6.50 M HCl(aq) are required to react with 5.95 g of an ore containing 35.0% Zn(s) by mass?

    asked by Robert on March 21, 2013
  100. math

    6.6*10^-4 --------- = ? 9.54*10^-7 in scientific notation form 3-4 digit answer is required

    asked by waffles on September 13, 2012