gas

  1. B

    Homework help - gas laws and stoichiometry!

    A candle is burnt inside a sealed container of oxygen gas with a volume of 1500 cm3 at 25oC. Once the reaction is complete and the container has cooled to 25.0oC, what will the pressure be inside the container? Assume the candle has no volume, that all the oxygen is consumed, that candle wax has...
  2. E

    Browns gas

    What is browns gas? I would like to determine if it is comprised of oxygen and hydrogen molecules or stand alone atoms.
  3. E

    Browns gas

    What is browns gas. I would like to find out if it is comprised of oxygen and hydrogen molecules or stand alone atoms.
  4. E

    Browns gas

    What is browns gas
  5. X

    Green Chemistry (Gas Stoichiometry)

    For my chemistry lab, I reacted Mg powder with HCl to create H2 gas. I measured the volume of H2 gas created by salt water displacement by reading off an inverted test tube. I measured 14.0 mL and calculated the percent yield (used PV=nRT to find theoretical volume and divided it by the actual-...
  6. D

    CS gas into Cyanide?

    I have no education in Chemistry but there is a hot debate in our country right now about the usage of expired tear gas (CS gas - 2-chlorobenzalmalononitrile or C10H5ClN2) in protests. My question to you dear educated people is that is it possible for a 20cc (cubic centimeter) CS gas canister...
  7. F

    Problem on most possible speed of gas

    To find the most possible speed of a gas, I know it is (2RT/M)^1/2 but how can i find out the speed of the gas mixture, let say 100:1 mixture of H2 and H2. Thank you!
  8. M

    Catalyst solution for a gas range?

    Please bear with me here. I'm 68 and haven't had chemistry since around 1967, or studied it since. ( though I have found what I learned, to be occasionally useful ) We have a cheapo GE gas range, that came with this modular house. Several times over the years, I couldn't see the flame burning...
  9. S

    ideal gas equation dilemma please help

    Hi everyone, I'd appreciate some help with this problem (it is driving me crazy) Humpback whales have large lungs (volume of 3600 L). If a whale takes a full breath of air at the surface (pressure= 1.000 atm or 101.3 kPa) and the internal body temperature of the whale is 36.40°C, how many grams...
  10. R

    Ideal gas deviation question

    Hello all, I have to teach the following problem this weekend and I am having trouble with one part of it. Any help would be greatly appreciated!!!! 2. In a reaction at equilibrium, it is concluded that helium gas behaves more ideally than carbon dioxide. Which of the following accurately...
  11. S

    Gas Stoichiometry Question

    Here's the question. A 3.25 gram sample of solid calcium carbide (caC2) reacts with 1.72 mL of water to produce acetylene gas (C2H2) and aqueous calcium hydroxide. If the acetylene was collected at 17.0 degrees C and 740.0 mm Hg, how many milliliters of acetylene were produced? I started off by...
  12. P

    Reaction of hydrogen gas to sulphur

    Hi,:p:confused: I would like your views on what would be the consequences of introducing hydrogen gas into the combustion process of marine diesel engines using heavy, high sulphur content fuels. The existing sulphur contents produce sulphur dioxide forming sulphuric acid and then ' acid...
  13. G

    Gas Chromotagraphy

    Hello, i am using a gas chromotography, GC to detect quinoline. i have diluted 75% n-octane and 25% p-xylene into my quinoline to get a concentration of 100ppm. my question is, will there be any chemical reaction occurring if i mix all these three solvent together? because when i run my...
  14. C

    Gas We Breathe (N & O)

    Nitrogen and Oxygen are the main components of the air you breathe. Write formulas to represent these gases? I am very confused, for my class has not begun formulas yet. I solved it this way, but I do feel confident in my result. N_2 + O_2 ––––>2NO? Now that I think about it, wouldn't it...
  15. B

    New here and I already have some question about chlorine gas and water.

    I work for a produce processing place in Southern California. We use Sodium Hypochlorite and Citric Acid in our wash water to sanitize our veggies. Our wash is normally anywhere between 5 to 20 ppm of free Cl2. We run from our own well water here so it is considered "hard" water, since it...
  16. B

    New here and I already have some question about chlorine gas and water.

    I work for a produce processing place in Southern California. We use Sodium Hypochlorite and Citric Acid in our wash water to sanitize our veggies. Our wash is normally anywhere between 5 to 20 ppm of free Cl2. We run from our own well water here so it is considered "hard" water, since it...
  17. S

    ideal gas

    if the partial pressure of co2 is 30 torr at STP, and nitrogen is the only other gas present whats the percent by mass of co2? please help ;p
  18. A

    AP chemistry gas laws problem

    The question is: The density of liquid nitrogen is 0.808g/mL at 77K. What volume of nitrogen gas at STP must be liquefied to make 10L of liquid nitrogen? What I've attempted is the following, but I know it's wrong because I checked the answer key. (dRT)/P=molar mass (808g/L • 0.08206 • 77)/ P =...
  19. M

    Hard gas law problem

    Hello can someone please solve this problem for me step by step and show as much work and calculation and reasoning as possible. Assume that you are trying to show how the problem can be solved to another student who does not understand what you are doing. Thank you. 1. Trimethyl aluminum...
  20. B

    Chemistry questions: gas and dipole moments

    No answers for these so need to confirm mine: 1. Which of the bonds HCl, CF, LiBr, HSi, NaS has the largest dipole moment? I think I may have done LiBr (I calculated it by the electronegativity of Li minus electroneg. of Br and it was the highest value of the five, so I assume it'd mean it...