Tuesday, January 18, 2011

Activity 2 - Molecular Masses

List the molecular masses of carbon dioxide, oxygen, and helium. Explain how you get this from the Periodic Table.

The atomic mass is located for each element on the Periodic Table of Elements.

CO2 - 12+16(2) = 44g/mole
The atomic mass for Carbon is 12.011 and the atomic mass for Oxygen is 15.9994. Creating Carbon Dioxide.

O2 - 16(2) = 32g/mole
15.99943 The atomic mass for Oxygen is 15.99943. Because there are 2 oxygen, you multiply the number by 2.

He- 4g/mole
4.0026 The atomic mass for Helium is 4.0026.

H2O - hydrogen is 2 g/mole and oxygen is 16g/mole creating 18g/mole

CO - 16+12 = 28g/mole Carbon Monoxide

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