Chemistry

posted by .

Question: What mass of water, in grams, would have to be decomposed to produce 17.6 L of molecular oxygen at STP?

Work:
n=PV/RT
x=(1 atm)(17.6 L)/(0.0821)(273 k)
x = 1.27348295454546

1.27348295454546 x 2 = 2.54696590909092

Grams= Moles x 18.0
Grams = 2.54696590909092 x 18.0
Grams = 45.8


I think I'm messing up somewhere, but I don't know what I'm doing wrong.

  • Chemistry -

    Your first mistake (I didn't look past that one) is that you didn't plug in the numbers into the calculator. You have the reciprocal of the number of moles.
    n = 1*17.6/[(0.09206)(273)]
    n should be 0.7857 and that should be rounded to the correct number of significant figures. (I wonder why you didn't just divide 17.6/22.4 to arrive at the number).

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. College Chemistry-Please

    *Only need input not doing it for me. PLEASE QUESTION: Some hydrocarbon fuels have sulfur present and contribute to air pollution. When this solid sulfur is burned in the presence of oxygen, the noxious, toxic gas sulfur dioxide results. …
  2. chemistry

    What mass of water, in grams, would have to be decomposed to produce 28.7 L of molecular oxygen at STP?
  3. Chemistry

    A certain compound contains carbon, hydrogen , and oxygen. When 1.00 grams of this compound are burned in oxygen gas 1.47 grams of CO2 and 0.600 grams of water are formed. When 2.75 grams of the compound are dissolved in 10.0 grams …
  4. Chemistry

    A certain compound contains carbon, hydrogen , and oxygen. When 1.00 grams of this compound are burned in oxygen gas 1.47 grams of CO2 and 0.600 grams of water are formed. When 2.75 grams of the compound are dissolved in 10.0 grams …
  5. chemistry

    What mass of water, in grams, would have to be decomposed to produce 12.0 L of molecular oxygen at STP?
  6. science

    What mass of water, in grams, would have to be decomposed to produce 26.3 L of molecular oxygen at STP?
  7. Chemistry

    What mass of water, in grams, would have to be decomposed to produce 13.3 L of molecular oxygen at STP?
  8. Chemistry

    What mass of water, in grams, would have to be decomposed to produce 25.1 L of molecular oxygen at STP?
  9. Chemistry

    I have tied to solve this problem but am stuck. Hoping what I have done so far is accurate but need help in conversion. What mass, in grams, of oxygen gas (O2) is contained in a 10.5 liter tank at 27.3 degrees Celsius and 1.83 atmospheres?
  10. Chemistry

    What mass (in grams)of KNO3 would have to be decomposed to produce 29 L of oxygen measured at STP?

More Similar Questions