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See video Home - A documentary about planet Earth

Click here to watch in HD. A beautiful copyright free, non-profit documentary about planet earth, balance, climate change, melting glaciers, deforestation, energy and agriculture.

93:18 19194 9.80
See video Acid Base: Calculate pH of a buffer after HCl is added

In the video, I use the Ka of ammonium ion. I got it like this: 1.00 x
10^-14 divided by 1.77 x 10^-5. This last value is the Kb for ammonia.

4:52 2675 1.46
See video NASA's new spacecraft and rockets, Ares 1-X 5:55 663 0.00
See video Chess tricks, tips, tactics

chess tutorials by VINOD KUMAR Accounts Teacher ( The Lawrence School Sanawar)

0:00 0.00
See video stalemate in chess rules of chess

Chess Tutorials by VINOD KUMAR accounts teacher ( The Lawrence School Sanawar)

0:00 0.00
See video En Passant - very interesting rule in chess

Chess Tutorials by VINOD KUMAR Accounts Teacher ( The Lawrence School Sanawar)

0:00 33 0.00
See video flash tutorials

Flash Tutorials by VINOD KUMAR.. HIMACHAL PRADESH.INDIA .. Email: vinod0050@yahoo.com

9:44 1 0.00
See video Casino Games

At http://www.allslotscasino.com/uk, all online casino games

1:43 0.00
See video נגישות

הרצאה ביום עיון

259:18 2 0.00
See video مجموع قيم زوايا المثلث - للتمرين 4:44 2 0.00
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