1 / 11

More Review Problems

More Review Problems. (An answer key with WORK will be uploaded later tonight!).

tanner-sanford
Download Presentation

More Review Problems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. More Review Problems (An answer key with WORK will be uploaded later tonight!)

  2. An element consists of 1.40% of an isotope with mass 203.973 amu, 24.10% of an isotope with mass 205.9745 amu, 22.10% of an isotope with mass 206.9759 amu, and 52.40% of an isotope with mass 207.9766 amu. Calculate the average atomic mass and identify the element.

  3. 207.22 amu; Lead

  4. Freon-12 (CCl2F2) is used as a refrigerant in air conditioners and as a propellant in aerosol cans. • Calculate the number of molecules of Freon-12 in 5560. grams of Freon-12. • How many Fluorine atoms are present in 5560. grams of Freon-12?

  5. 2.769 x 1025 Freon-12 molecules • 5.538 x 1025 Fluorine atoms

  6. Bauxite, the principal ore used in the production of aluminum, has a molecular formula of Al2O3 2H2O. • What is the molar mass of bauxite? • What is the mass of 2.1 x 1024 formula units of bauxite?

  7. 138.00 g/mol • 4.8 x 102 grams

  8. Convert 2.72 x 1021 molecules of ethanol, C2H5OH to grams.

  9. 0.208 grams of Ethanol

  10. How many molecules of caffeine, C8H10N4O2, are present in 3.50 moles of caffeine?

  11. 2.11 x 1024 molecules of caffeine

More Related