<p>So, the school year hasn’t even started for me yet and my AP chem teacher sent me work in the mail. Needless to say, I’m a bit confused with the material. So I have a few questions for those of you that have taken this class.</p>
<li>How many nm = 1 mm?</li>
<li>How many ms = 1 s?</li>
</ol>
<p>Also I’m not quite sure if I’m converting my units correctly. In one problem I had to convert 3.5 x 10^-9m to picometers. If found that one pm = 1x10^-12 meters. I got an answer of 0.2 x 10^-3 … but I’m not really sure if that’s right. </p>
<p>Thanks in advance if you can help me with any of this. =]</p>
<p>A nanometer is one billionth of a meter (10^-9), while a millimeter is one thousandth of a meter (10^-3). So there is 10^6 or 1,000,000 nm in a mm.</p>
<p>A millisecond is one thousandth of a second, so there would be 1000 of them in a second.</p>
<p>A picometer is one trillionth of a meter (10^-12). There is no reason for the 3.5 to change. All you need to do is figure out the proper power of 10. 10^-9 divided by 10^-12 is 10^3 or 1,000. Just think about it and you can see your answer is wrong. Picometers are smaller than the original measurement you are given; there wouldn't be a fractional number of them.</p>
<p>I hope this helps. It is important at the outset to learn how to make these calculations. I'm surprised the subject isn't covered in your text. Perhaps it is in an appendix to your book?</p>
<p>oooh!
Thank you soo much. That made a lot of sense =D
We haven't been given text books yet. Actually, I haven't even met the teacher. LOL I guess she just wants to see how well I would do on my own first.</p>