science

posted by .

Calculate the density of sulfur hexafluoride gas at 703 torr and 23°C.

density is mass/volume so how do i get those from what i am given?

also

) Calculate the molar mass of a vapor that has a density of 6.735 g/L at 11°C and 743 torr.

  • science -

    Molar mass SF6 = 146.06 g/mol
    p = 723 / 760 = 0.951 atm
    T = 31 + 273 = 304 K
    d = M p / RT = 146.06 x 0.951 / 0.0821 x 304 = 5.57 g/L

    M = d x RT/ p
    T = 14 + 273 = 287 K
    p = 825 / 760 = 1.09 atm
    M = 7.535 x 0.0821 x 287 / 1.09 = 162.89 g/mol

    Hope this helps :)

  • science -

    thanks!!!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    The nucleus of a hydrogen atom is a single proton, which has a radius of about 1.0 10-15 m. The single electron in a hydrogen atom normally orbits the nucleus at a distance of 5.3 10-11 m. What is the ratio of the density of the hydrogen …
  2. Chem

    What is the density of N2O, a gas, at STP?
  3. Chemistry

    A certain mine produces 2.5 108 kg of copper from chalcopyrite (CuFeS2) each year. The ore contains only 0.80% Cu by mass. (a) If the density of the ore is 2.0 g/cm3, calculate the volume of ore removed each year. (b) Calculate the …
  4. science

    1. the molar mass of helium is 4.00 g/mol. calculate the volume of 1 mol of helium at STP (T = 273, P = 1 atm) what is the density of helium at STP?
  5. science (density)

    1) mass=100g, volume=10ml,density= 2) volume=7ml, mass=70g, density= 3) mass=50g, volume=10cm3, density= 4) volume=30cm3,mas=90g,density= 5) mass=120,volume=6ml,density= Thanks everyone i apresheate your help.
  6. science (density)

    1) mass=100g, volume=10ml,density= 2) volume=7ml, mass=70g, density= 3) mass=50g, volume=10cm3, density= 4) volume=30cm3,mas=90g,density= 5) mass=120,volume=6ml,density= Thanks everyone i apresheate your help.
  7. chemistry

    Calculate the molar mass of a gas if 0.805g of this gas has a pressure of 4.00 bars at 305K in a 1 L. What is the gas density at this T and P, and what is the density at STP
  8. Chemistry

    Calculate the density of sulfur trioxide gas at 35 degrees celsius and 715 torr pressure. I know that d=m/v = PM/RT. Im not sure how to set this up. I know the molar mass of sulfur trioxide is 80.0642 but im not sure if I need to use …
  9. Chemistry

    1.) A convenient method of determining the volume of a container of irregular shape is to fill it with a liquid of known density and measure the mass. An empty Erlenmeyer flask marked "10 mL" weighs 26.3251 g. When filled with mercury, …
  10. Chemistry

    Hi, I'm doing a chem lab of the Percent Composition of Potassium Chlorate-A Gas Law Experiment and we need to calculate the percent of KClO3 in the sample volumetrically and gravimetrically. I need help calculating the Volumetric percent …

More Similar Questions