How to Find the Mass of One Molecule of H2 (Diatomic Hydrogen)
Note that this video is for the mass of an AVERAGE molecule of H2. If you were calculating the mass for specific isotopes, or combinations of isotopes of Hydrogen atoms, you would get a different value.
There are two steps to find the mass of a single molecule of H2 (Diatomic Hydrogen) in grams. First we find the molar mass for H2 using the Periodic Table. We then divide this by Avogadro's Number (6.02 x E23).
To find the molar mass for H2 we add up the atomic masses of the individual atoms in the Methane molecule. Once we have the molar mass for H2 we can divide by Avogadro's Number to find the mass of a single molecule of H2.
You should check your answer to make sure it makes sense. Since molecules are very, very small you should get a very small number as your answer.
Note that this is the mass for a single molecule of H2 (Diatomic Hydrogen). In reality electronic balances are not able to measure the mass of one single molecule at a time due to their small size.
For help with molar mass and chemical quantities, the following videos may be helpful:
• More Moles to Grams Practice: • Practice: Converting between Moles an...
• Molar Mass in Three Easy Steps: • How to Calculate Molar Mass (Molecula...
• Understanding the Mole: • Understanding the Mole (the basics)
• Moles - Gram Conversions: • Practice: Converting between Moles an...
• How to Balance Chemical Equations: • How to Balance Chemical Equations in ...
• Mole Ratio: • How to Find the Mole Ratio to Solve ...
• Reaction Stoichiometry: • How to Solve Reaction Stoichiometry P...
My chemistry website: http://www.Breslyn.org
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