My Math Forum Having trouble converting units/trouble understanding

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 January 29th, 2012, 04:24 PM #1 Member   Joined: Jul 2010 Posts: 52 Thanks: 0 Having trouble converting units/trouble understanding So, here's the question 1 picogram = _____ g? In the table of SI prefixes, it says | pico- | p | 0.000 000 000 001 | 10^-12 Gram is one, right? How do I solve this? So far, I came up with: 1 pg multiplied by (1g / ???? ) = g? In the end, you cancel out both pg and the pg in the denominator? God, sorry for the dumb question.... Thanks!
 January 29th, 2012, 04:45 PM #2 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038 Re: Having trouble converting units/trouble understanding 1 trillion picograms = 1 gram (not very heavy!)
January 29th, 2012, 05:02 PM   #3
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Re: Having trouble converting units/trouble understanding

Quote:
 Originally Posted by Denis 1 trillion picograms = 1 gram (not very heavy!)
It's not 1x10^-12 = 10^-12 grams?

Unless I'm wrong, you mean that 1 picograms is equal to 1 trillion grams then, sir?

 January 30th, 2012, 02:26 AM #4 Senior Member   Joined: Jul 2011 Posts: 245 Thanks: 0 Re: Having trouble converting units/trouble understanding $1 \text{ picogram}=10^{-12} \text{ gram}$ This can also be deduced from what Denis said: $1 \text{ trillion picograms}=1 \text{ gram} \Rightarrow 1,000,000,000,000 \text{ picograms}=1 \text{ gram}$ Dividing through by $1,000,000,000,000$, we see: $1 \text{ picogram}=\frac{1}{1,000,000,000,000} \text{ gram}=10^{-12} \text{ gram}$
 February 5th, 2012, 01:00 PM #5 Member   Joined: Jul 2010 Posts: 52 Thanks: 0 Re: Having trouble converting units/trouble understanding Is there a formula for converting units for km to km, l to ml, kh to microgram, cm to km, etc.?

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