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Topic: conversions  (Read 4335 times)

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Dominique

  • Guest
conversions
« on: May 23, 2005, 12:22:17 PM »
Okay I am new to this forum but need some help. I am currently taking college chemistry and just complete modern chemistry. In my previous class was excellent at conversions and now that im doing this online quiz for my current class it is saying I getting the answers all wrong.

can someone please help me on this.
here are some examples: how many kilograms in 1 teragram, how many nanometers in 8.50x10^2 terameters? how many kilograms in 27 femtograms.
AND YES I DID TRY AT ALL OF THESE IT WOULD BE A LOT OF SPACE USED JUST TO SHOW YOU THAT THO.
it seems like i would be so easy using my conversion chart. But all my answer keep comming up wrong. OH and i have a test on it tomo at 8am. ugh.
« Last Edit: May 23, 2005, 12:24:21 PM by Dominique »

Garneck

  • Guest
Re:conversions
« Reply #1 on: May 23, 2005, 01:50:01 PM »
Okay I am new to this forum but need some help. I am currently taking college chemistry and just complete modern chemistry. In my previous class was excellent at conversions and now that im doing this online quiz for my current class it is saying I getting the answers all wrong.

can someone please help me on this.
here are some examples: how many kilograms in 1 teragram, how many nanometers in 8.50x10^2 terameters? how many kilograms in 27 femtograms.
AND YES I DID TRY AT ALL OF THESE IT WOULD BE A LOT OF SPACE USED JUST TO SHOW YOU THAT THO.
it seems like i would be so easy using my conversion chart. But all my answer keep comming up wrong. OH and i have a test on it tomo at 8am. ugh.

1 Tg = 1012 g
1 kg = 103 g

1012 g = (109) * 103 g

1 Tg = 109 kg

so there are 1 billion kilograms in one teragram


27 fg = 27 * 10-15 g
1 kg = 103 g

(27 * 10-15 g)/(103 g) = 27 * 10-18  = 2,7 * 10-17

There are.. a 2,7 * 10-17  kilograms in 27 femtograms

so on.. so on..

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