1. Chem11

    How many moles of iron(iii) chloride could be made with an unlimited supply of iron atoms but only 1.81 X 10e23 chlorine atoms?

    asked by Kay on October 7, 2015
  2. chemistry

    How many moles of vanadium atoms, V, are needed to combine with 0.725 mol of O atoms to make vanadium pentoxide,V2O5?

    asked by Dom on November 25, 2012
  3. Chemistry

    How many moles of NaOH per liter of solution would you expect to have in a solution that is labeled "0.105 M NaOH" on the side of the gradulated cylinder?

    asked by Carla on March 15, 2012
  4. Chemistry

    Why do we need to use amount in moles to solve stoichiometry problems? Why can't I just convert from mass to mass? I'm not sure how to answer. I think I know the answer and just can't formulate it into words.

    asked by Ana on March 4, 2010
  5. chemistry

    How many moles of water will produced at equilibrium be if there is 1.0 mole of carbon dioxide formed at equilibrium? 2 C2 H6(g) + 7 O2(g) 4 CO2(g) + 6 H2 O(g) ... [CO2]^4[H20]^6/[C2 H6]^2[O2]^7

    asked by Anonymous on July 27, 2010
  6. Chemistry

    When 2.50 mol of Mg3N2 are allowed to react according to the following equation, how many moles of H2O also react? Mg3N2 + 6H2O ---> 3Mg(OH)2 + 2NH3

    asked by Soojung on August 28, 2008
  7. chemistry

    It takes 75 mL of 0.124 M KOH to neutralize 28.5 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in moles/liter.

    asked by matt on October 1, 2011
  8. Chemistry

    how many moles of lead (II) sulfate will be produced when 500 grams of magnesium sulfate is allowedto react with lead (II) nitrate?

    asked by Rachel on November 20, 2011
  9. chemistry

    Given the following balanced chemical equation, if 15.4 g AgNO3 are reacted, how many moles of AgCl are produced? 2 AgNO3 + BaCl2 → 2 AgCl + Ba(NO3)2

    asked by anna on March 1, 2015
  10. chemistry

    A sulphuric acid density solution of 1.38 g/ml has a concentration of 56% w/w. Calculate the amount of moles of the existing acid in 1 litre of this solution.

    asked by kelly on July 12, 2018
  11. chemistry

    a sample of unknown gas is found to have a volume of 479 mL at 27.0 degrees C and 1.30 atm. How may moles of gas are int eh sample?

    asked by Jazz on November 19, 2010
  12. chemistry

    For the balanced reaction HCl(aq) + NaOH(aq) ? H2O(l) + NaCl(aq), how many moles of H2O could be produced from 25 g HCl? (You have already done this type of question!

    asked by valarie on November 29, 2011
  13. physics

    How many mL of orange juice would be required to get the recommended daily allowance of 60 mg of vitamin C? (Concentration of vitamin C is .011 moles/L in 5.0 mL of juice).

    asked by Seth on May 4, 2011
  14. Chemistry

    A sample of argon gas at STP occupies 56.2 liters. Find the number of moles of argon and the mass in the sample

    asked by Emily on April 27, 2013
  15. CHEMISTRY

    The solubility of Ag2NtO4, silver nortonate, in pure water is 4.0 x 10-5 moles per liter. Calculate the value of Ksp for silver nortonate.

    asked by Anonymous on December 6, 2017
  16. chemistry

    You have 26.44 mL of 1.83 M HCl in a beaker. You dilute this acid with 40.08 mL of water. When you analyze the solution you find that the number of moles of HCl in the new solution is

    asked by Anonymous on December 5, 2011
  17. Chemistry

    If you wanted to create a equimolar buffer using 1.0 mol of NaHS in 1.0L of water what acid would you need to add? how many moles of that acid do you need to add?

    asked by Jake on February 11, 2017
  18. Physical Science

    I balanced Li(s) + Cl2(g)= LiCl(s) to 2Li(s) + Cl2(g)= 2LiCl(s) Now the question is, if you have 39.8g Li, how many moles of LiCl would you have? I am stuck on this part. Any help would be appreciated.

    asked by mel on March 18, 2012
  19. science

    If 0.188 moles of zinc reacts with excess lead(IV) sulfate, how many grams of zinc sulfate would be produced in the following reaction?

    asked by Anonymous on November 3, 2015
  20. science

    If 0.188 moles of zinc reacts with excess lead(IV) sulfate, how many grams of zinc sulfate would be produced in the following reaction?

    asked by Anonymous on November 3, 2015
  21. Chemistry

    A substance releases 496kJ of heat as 2.60 moles condense from a gas into a liquid. What is the molar heat of vaporization of the substance?

    asked by Anonymous on May 7, 2013
  22. chemistry

    In the reaction of N2 and H2 to produce NH3, how many moles of H2 will produce 37.9 grams NH3 if sufficient N2 is present? Do not enter units with your answer.

    asked by Charles on October 21, 2011
  23. Chemistry

    The differnece in the mass of 100 moles of each sodium atoms and sodium ions is 5.48002 g. Compute the mass of an electron.

    asked by Mohit on December 15, 2012
  24. chemistry

    For the reation: C3H8+5 02 =3 CO2+4 H2O How many moles of C3H8 are needed to make 3.60 grams of H2O? I think the ans is 44.8molesc3h8

    asked by Lillian on October 24, 2010
  25. Chemistry

    3 Cl2 + 6 KOH go to KClO3 + 5 KCl + 3 H2O how many moles of KClO3 form when 2 grams of KOH react completely

    asked by Samantha on June 22, 2016
  26. chemistry

    For the reation: C3H8+5 02 =3 CO2+4 H2O How many moles of C3H8 are needed to make 3.60 grams of H2O? I think the ans is 44.8molesc3h8

    asked by Lillian on October 24, 2010
  27. chemistry

    Porassium alum is 3.9 parts per 100 parts of water. Knowing this, how many moles of potassium alum are present in 50ml?

    asked by Lex on October 19, 2012
  28. ChemistryPRELABS

    In the synthesis of K3[Al(C2O4)3].3H2O, 0.0357 moles of the limiting reagent were used in the reaction. What is the maximum possible yield? And which is the limiting reagent?

    asked by Ami on December 1, 2015
  29. Chem

    A 7.00 mL sample of blood serum has a pH of 7.38 a. What is the concentration of H3O+? b. What is the concentration of OH-? c. How many moles of H3O+ are present? I have no clue what to do and I don't have a calculator with me someone help me I would

    asked by Johnny on March 19, 2014
  30. Chemistry

    methanol and aluminum are reacted. how many moles of methanol must burn to raise the temperature of 100g of aluminum by 80 degrees Celsius?

    asked by Ashlee on January 13, 2011
  31. Chemistry

    Consider the generic reaction between reactants A and B: 3A+4B→2C How many moles of B will be in the reaction vessel once the reactants have reacted as much as possible? (Assume 100% actual yield.)

    asked by Aria on April 29, 2016
  32. physics

    The hydraulic oil in a car lift has a density of 8.54 x 102 kg/m3. The weight of the input piston is negligible. The radii of the input piston and output plunger are 5.01 x 10-3 m and 0.160 m, respectively. What input force F is needed to support the

    asked by help on August 29, 2015
  33. 5th grade Math

    I need help with the question below. A bicyle tire has a diameter of 24 inches. If a tire rotates for 20 revolutions about how far has the bike rider ridden? Use 3.14 for pi. I know to find the circumference you would do 24 x 3.14 which equal 75.36. I'm

    asked by Brandi on March 19, 2012
  34. algebra

    A car is moving at the rate of 80km/h. the diameter of its wheel is 60cm. a, find the number of revolutions per minute that the wheels are rotating. b, find the angular speed of the wheels in radians per second.

    asked by Ms Kay on April 15, 2017
  35. Math question

    A cone-shaped container has a height of 9 in. and diameter of 2 in. It is filled with a liquid that is worth $2 per cubic inch. What is the total value of the liquid in the container? Use 3.14 for π . Enter your answer in the box. I think it's 18.84 can

    asked by sam on February 15, 2017
  36. Physics

    A car with its 2 headlights on is approaching you at night. Approximately how close (in meters) does the car have to be to you so that you can distinguish the two headlights? Assume that the diameter of your pupils is 6.5 mm, the distance between the two

    asked by Anonymous on May 30, 2013
  37. trig

    A car is traveling at 34 miles per hour. If its tires have a diameter of 14 inches, how fast are the car’s tires turning? Express the answer in revolutions per minute and round to two decimal places.

    asked by EBB on April 26, 2016
  38. Physics

    You design a roller coaster that has an initial drop from some height "h" followed by a loop and then the ride comes to a stop. If the loop of a circle with a diameter of 50 m, what is the minimum height you would need to make sure nobody falls out?

    asked by Paige on March 4, 2011
  39. Geometry

    The marching band has ordered a banner with its logo. The logo is a circle with a 45 degree central angle. If the diameter of the circle is 3 feet, what is the length of the major arc to the nearest tenth?

    asked by Sholanda on May 16, 2012
  40. Math

    The diameter of a tire is 2.5 ft. Use this measurement to answer parts a and b. Show all work to receive full credit. I need help with part B About how many times will the tire have to rotate to travel 1 mile? (1 mile = 5,280 ft)

    asked by Plz Help on April 23, 2019
  41. trig

    A car is traveling at 34 miles per hour. If its tires have a diameter of 14 inches, how fast are the car’s tires turning? Express the answer in revolutions per minute and round to two decimal places.

    asked by EBB on April 26, 2016
  42. Mathematicz (The Correct Question)

    A pipe has an outer radius of 4 1/2 cm. If the metal is 1/4 cm thick, what is the inner diameter of the pipe? Please help me!!! You not you just subtract from the or the wall thickenss, then double it to get the id? Draw two concentric circles and see if

    asked by Ayra on September 12, 2006
  43. College algebra

    A circular vent pipe with a diameter of 5.5 inches is placed on a roof that has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. Round parameters to the nearest hundredth.

    asked by Missy on May 5, 2012
  44. physics

    A force of 40N is applied at the end of a wire 4m long and produces an extension of 0.24mm. If the diameter of the wire is 2.00mm calculate the stress on the wire and strain in the wire. With full workings please

    asked by andre on April 23, 2018
  45. Math

    A circular path around a lake has a diameter of 2,000 feet (ft). Pranotti jogs around the path 5 times for her morning run. How far does she run? Use 3.14 for ƒàƒnand round your answer to the nearest foot

    asked by Sadie on February 25, 2009
  46. Maths

    The diameter of a ball bearing is to have an average of 2.0 Cm. A random sample of 10 bearings is selected every hour to check the diameters. The sample selected at 9 a.m. gave the following measurements: 2.02, 2.04, 2.00, 1.98, 1.98, 2.04, 2.04, 2.00,

    asked by Naveen on December 9, 2011
  47. physics

    A roller coaster car with a mass of 130 kg travels through a loop with a diameter of 20meters. What is the minimum speed at the top of the loop so that the car stays on the tracks? m= 130kg r= 10m v= ?

    asked by angelica on January 7, 2015
  48. Physics

    a wire 100 cm long and 0.2 cm in diameter is suspended from a support. a 10 kg mass is hung from the lower end of the wire. a find the stress b find the strain c young's modulus of elasticity

    asked by Charlotte on January 13, 2015
  49. maths need help

    the diameter of a circular grass-field is 40m. There is a road of width 1 m starting from 1 m away of its end point. Calculate the expenditure to grass the road at a rate of 26 paise per m^2. Plz help with solution

    asked by marvin on September 17, 2016
  50. math (word problem)

    Suppose a car tire has a diameter of 26 inches. How many rotations will thee tire make if the car travels 1 mile? Round to the nearest tenth. If you get answer please show work of how to get there. Thanks!

    asked by emma on March 29, 2011
  51. mAtH

    a cylindrical barrel is 2.8 feet in diameter and 8 feet high. If a cubic foot holds about 7.5 gallons of liquid, how manygallons of water will this barrel hold? Aghhhh! I completely don't get it!!

    asked by audrey on May 17, 2011
  52. math

    1. Find the area of a circle whose diameter is 5.1 centimeters (cm). Use 3.14 for ƒàƒnand round your answer to the nearest tenth of a square centimeter. 2.A triangle has base 13 feet (ft) and an altitude of 6 ft. Find its area

    asked by chester on October 12, 2007
  53. Physics

    I am having a bit of trouble with this one. A safety harness is connected to a cable with a report breaking stress of 800MNm-2. What mass could be hung from a harness if the diameter of the cable was 6mm? Any help would be great with the formula

    asked by Violet on October 1, 2013
  54. Chemistry - Equations

    I am a student in the ninth grade and I need help with the following problems because I do not understand how to do them. I appreciate your help and thanks once again. 7. in 2CO(grams) + O2(grams) => 2CO2(grams), what is the ratio of moles of oxygen used

    asked by Theodore on January 31, 2008
  55. physics

    The atoms in gas ( gas constant R=8.31 J/mol K) can be treated as classical particles if their de Broglie wavelength L is much smaller than the average separation between the particles d. Consider monatomic helium gas (mHec^2 = 3727 MeV, molar mass 4g/mol)

    asked by Bun on December 7, 2009
  56. Chemistry

    Analysis of a compound indicates that it is 49.02% carbon, 2.743% hydrogen, and 48.23% chlorine by mass. A solution is prepared by dissolving 3.150 grams of the compound in 25.00 grams of benzene, C6H6. Benzene has a normal freezing point of 5.50degreeC

    asked by Tracy on January 10, 2011
  57. Chemistry

    Analysis of a compound indicates that it is 49.02% carbon, 2.743% hydrogen, and 48.23% chlorine by mass. A solution is prepared by dissolving 3.150 grams of the compound in 25.00 grams of benzene, C6H6. Benzene has a normal freezing point of 5.50degreeC

    asked by Tracy on January 10, 2011
  58. Chemistry

    Analysis of a compound indicates that it is 49.02% carbon, 2.743% hydrogen, and 48.23% chlorine by mass. A solution is prepared by dissolving 3.150 grams of the compound in 25.00 grams of benzene, C6H6. Benzene has a normal freezing point of 5.50degreeC

    asked by Tracy on January 10, 2011
  59. algebra

    In a basketball game, a regular basket was worth 2 points and a long-distance basket was worth 3 points. If there were 45 baskets in a game and 96 points total, how many regular baskets r and long-distance baskets l were made? Show the correct system of

    asked by Sophie on December 21, 2012
  60. Physics

    Suppose you discover your grandfather's collection of Caruso records from the early part of the century. These disks played at 78.0 revolutions/minute (rpm) and were 9.00in. in diameter. What was the radial acceleration of a point on the rim of such a

    asked by Carmen on November 2, 2010
  61. Health (Ms. Sue)

    "Juan was a successful architectural engineer in San Francisco, California. He had two children and a wife. At age 42, he finally quit his smoking habit, which he started when he was 18. He began to jog every day and completed a marathon on his 45th

    asked by Anonymous on December 8, 2013
  62. chemistry

    Physicain elects to re-hydrate the patient br intravenous(IV) administration of 2.0 L of 0.45% (w/v) of NaCl. 0.45%9w/v) = 0.45g/100ml A.How many grams of NaCl were given? B.How many moles of Nacl were given? C.What is the molarity of the NaCl solution?

    asked by Monica on May 13, 2013
  63. Chemistry

    It is calculated that 0.0191 moles of CO2 are expected from a reaction at 25 degrees C and 1 atm. What volume of CO2 does this represent in cm3? (R = 0.0821 L atm / K / mol)

    asked by Jack on November 26, 2012
  64. AP Chemistry

    Suppose you have added 200.0 mL of a solution containing 0.5000 moles of acetic acid per liter to 100.0 mL of 0.50000 M NaOH. What the is the final pH? The Ka of acetic acid is 1.77 x 10^-5.

    asked by Freddy on March 8, 2015
  65. Chemestry

    A 1L of buffer was prepared from 0.15 mole of Na2HPO4 and 0.10 moles KH2PO4. a) What is your pH and what is the pH change that adding of 80.0 mL of 0.100 mol L-1 NaOH cause? b) What happen to the pH after adding 10.0 mL of 1.0 mol L HNO3-1.

    asked by Margo on April 28, 2011
  66. chemistry

    Determine the number of moles of a) N atoms in a sample of C7H5(NO2)3 that has the same number of O atoms as 12.6g C6H12O6 Someone posted a way to answer this question but i still don't understand

    asked by tomi on September 20, 2008
  67. chemistry

    TiO2 + C + 2Cl2 > TiCl4 + CO2 If you begin with 1.25 moles of TiO2, what mass of Cl2 gas is needed? i got 175g of Cl2 is my answer correct?

    asked by shaggy on April 20, 2008
  68. science

    Given the following reaction (it IS balanced), how many grams of CO2 are produced when 0.700 moles of toluene (C7H8) is allowed to completely combust? C7H8 + 9 O2 ¨ 7 CO2 + 4 H2O

    asked by Linzie on April 8, 2015
  69. chemistry help asap please

    You have been given a sample of unknown molarity. Calculate the molarity of a solution which has been prepared by dissolving 8.75 moles of sodium chloride in enough water to produce a solution of 6.22l.

    asked by David on January 9, 2017
  70. CHEM

    Aluminum reacts with Chlorine gas to form AlCl3. [2Al(s)+3Cl2(g)=2AlCl3(s)] Given 11.0g of Al and 16.0g Cl2, if you had excess Al, how many moles of AlCl3 could be produced from 16.0g of Cl2?

    asked by leng on September 22, 2012
  71. Chemistry

    Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?

    asked by Elijah on May 18, 2019
  72. chemistry

    If an aqueous solution of sulfuric acid (H2SO4) is neutralized by 3.20 mol of sodium hydroxide (NaOH), how many moles of acid were originally present in the solution?

    asked by Anonymous on May 10, 2011
  73. Chemistry

    A 6.00 ft cylinder has a radius of 26 in. It contains 189 lb of helium at 25 celsius. Express the volume of the cylinder (V=ðr²h) in liters, the amount of helium in moles and the temperature in Kelvin.

    asked by Wendy on September 27, 2012
  74. Chemistry

    Calculate the amount in moles and the mass in grams of KOH needed to convert 1.50 g of aluminum to KAl(OH)4. Balanced equation = 2 Al (s) + 2 KOH (aq) + 6 H2O (l)->2 KAl(OH)4 (aq) + 3 H2 (g)

    asked by Cynthia on February 29, 2012
  75. CHEMISTRY

    You have been given a sample of unknown molarity. Calculate the molarity of a solution which has been prepared by dissolving 8.75 moles of sodium chloride in enough water to produce a solution of 6.22l.

    asked by Jason on January 9, 2017
  76. chemistry

    1=what is the percntage yeild of carbon dioxide if 4 moles of octane are burnt to produce 1350g of carbon dioxide 2c8h18 + 25o2 = 16co2 + 18h2o

    asked by sadia salem on July 24, 2017
  77. chemistry

    how many moles of oxygen atoms does 1.2x10^25 diphosphorus pentoxide molecules have? hwo many oxygen atoms are in 1.25 mol sulphur trioxide? i don't understand these

    asked by lisa on December 4, 2008
  78. chemistry

    Nitrous Oxide(N2O), or laghing gas, is mommonly used as a anesthetic in denistry and surgery. How many moles are present in 8.4 liters of nitrous oxide at STP?

    asked by Meteknesh on December 14, 2011
  79. Chemistry

    in a blast furnace, iron(III) oxide is used to produce iron by the following (unbalanced) reaction: Fe2O3 + CO = Fe + CO2 a. if 4 kg Fe2O3 are available to react, how many moles of CO are needed?

    asked by RS on May 18, 2012
  80. Chemistry

    Calculate the amount in moles and the mass in grams of KOH needed to convert 1.50 g of aluminum to KAl(OH)4. Balanced equation = 2 Al (s) + 2 KOH (aq) + 6 H2O (l) ¨ 2 KAl(OH)4 (aq) + 3 H2 (g)

    asked by Cynthia on February 29, 2012
  81. chemistry

    If you have 12 moles of a substance, how many molecules do you have of that substance? Suppose the substance has a molecular weight of 342. How many grams of that substance would you have to dissolve in a liter of water to make a 12 M solution?

    asked by VANESSA on September 3, 2011
  82. AP Chem

    A sample of (N2H5)2C3H4O4 contains 1.084 x 1024 carbon atoms. How many moles of hydrogen atoms are there in the same sample? Avogadro’s number = 6.022 x 1023.

    asked by Sanz on February 22, 2015
  83. chemistry

    so we did a chem lab and one of the questions is to tabulate the amount of S2O3 consumed in moles and times (sec) for each run. I'm just not sure how to calculate the amount consumed. Can someone please explain how?

    asked by Anonymous on February 1, 2014
  84. chem

    Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?

    asked by Kristy on November 11, 2010
  85. Chemistry

    Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?

    asked by Anne on November 11, 2010
  86. Chemistry

    In the reaction Fe^2O^3+3CO->2FE+3CO^2, what is the total number of moles of CO used to produce 112 grams of iron? Please explain step by step how to do this problem, thanks:)

    asked by Unknownn on March 6, 2013
  87. Chemistry

    Write the equation for the dissolution of NH4NO3 in water. If 5.95 mol of NH4NO3 are dissolved, how many total moles of ions are produced? Answer in units of mol

    asked by Kristen on March 13, 2014
  88. Science

    Help!! How many atoms in 3.45 mL of water? (H2O only;mL=g) and If you are out panning for gold and discover a nugget that is exactly 2.50 moles, how many molecules, atoms, and grams would you have? At a cost of $375 per ounce, what would be the value of

    asked by Jack on October 20, 2010
  89. chemistry

    A buffer solution is 1.00 M in NH3 and 1.10 M in NH4Cl. If 0.230 moles of NaOH are added to 1.00 L of the buffer, what is its pH? Assume the volume remains constant. Kb of NH3 = 1.8 multiplied by 10-5.

    asked by nick on October 8, 2010
  90. Algebra

    Is this correct? If not can you please tell me what steps I did wrong? Thanks! The hydrogen ion concentration of milk is about 1.6 x 10^-7 moles per liter. Find the pH. pH = -log [H+] pH = -log[1.6 x 10^-7] pH = -(-7.204119983) pH = 7.2 The pH balance of

    asked by Kate on June 18, 2010
  91. psy - please proofread

    Below is your Week 5 Day 7 CheckPoint: Persuasion & Conformity Scenario Assignment. You are to write a 200- to 300-word critique of the response. Include a summary of the decision stated in your assigned response, whether or not this response has made you

    asked by rose - Ms. Sue on May 9, 2008
  92. algebra

    this is the hardest problem people said it was the hardest andf they can not solve it can anyone solve this please it is hard In a basketball game, Garrett and Logan scored a total of 19 points. Logan and Ray scored a total of 14 points. Logan scored as

    asked by zachary stanich on February 15, 2012
  93. Algebra

    Please help me with this problem: A basketball team scored 50 times in their previous game. The team earned points from making two-point field goals (baskets) and one point free throws. If the team scored 87 points in their last game,how many two-point

    asked by Leroy on December 15, 2016
  94. Chemistry

    80.0 ml of 1.50 M lead (IV) acetate is added to a 65.5 ml solution of 1.25 potassium chloride. 5.84 grams precipitate are collected. what is the percent yield? Calculate the concentrations of all ions remaining in solution. Okay so I know you have to

    asked by Kenzie on November 7, 2016
  95. Thermodynamics

    A sample consisting of 2 moles of diatomic perfect gas molecules at 250K is compressed reversibly and adiabatically until its temperature reaches 300K. Given that Cv,m is 27.5 JK/mol calculate q, w, delta U, delta H and delta S.

    asked by Rudo Kanukamwe on June 7, 2015
  96. chemistry equilibriums

    At a certain temperature, 2.00 moles of phosphorus(V) chloride, PCl5, was placed in a 1.0 L vessel and permitted to react as shown: PCl5 (g) PCl3 (g) + Cl2(g) At equilibrium, the container held 0.40 PCl5. What is the numerical value of Kc for the system as

    asked by chem on December 29, 2010
  97. Chemistry

    What volume of carbon monoxide gas (at STP) is needed when 1.35 Moles of oxygen gas react completely in the following equation. 2CO + O2 > 2CO2 please show your work I'm having trouble with Gas Stoichiometry.

    asked by Randy on April 16, 2012
  98. Chemistry

    Hydrogen gas, , reacts with nitrogen gas, , to form ammonia gas, , according to the equation 3H2+N2-2NH3 How many grams of are needed to produce 13.75g of NH3 ? How many molecules (not moles) of are produced from 8.26×10−4g of H2 ?

    asked by Rose on October 5, 2009
  99. English

    1.Each member of the basketball team was awarded a trophy to (transform commemorate) the championship season. commemorate 2.Ms.Wilentz is the kind of manager who does not try to (extort exalt) cooperation from the people under her, but earns it by being a

    asked by Jerald on April 17, 2013
  100. physics

    A 49.7-cm diameter disk rotates with a constant angular acceleration of 2.7 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this

    asked by Anonymous on October 23, 2010