Yahoo Answers is shutting down on 4 May 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

?
? asked in Science & MathematicsChemistry · 2 weeks ago

Answer chemistry homework ?

1.  A 0.168 mol sample of an unknown gas contained in a 8.00 L flask is found to have a density of 0.867 g/L. The molecular weight of the unknown gas is

_____     g/mol.

2.  A 0.156 mol sample of Kr gas is contained in a 6.00 L flask at room temperature and pressure. What is the density of the gas, in grams/liter, under these conditions? 

 ______    g/L

1 Answer

Relevance
  • Roger the Mole
    Lv 7
    2 weeks ago

    1.

    (0.867 g/L) x (8.00 L) / (0.168 mol) = 41.3 g/mol

    2.

    (0.156 mol Kr) x (83.798 g Kr/mol) / (6.00 L) = 2.18 g/L

Still have questions? Get answers by asking now.