home *** CD-ROM | disk | FTP | other *** search
/ Exploring Creation with P…al Science (2nd Edition) / Exploring Creation with Physical Science (2nd Edition).iso / mm / mod02 / ex2_1a.avi (.mp4) < prev    next >
Audio Video Interleaved Video  |  2012-12-18  |  3.5 MB  |  500x400  |  1fps  |  1 minute, 59 seconds
Transcription: In this example, we're being asked to convert 21% into parts per million. Now you should recognize that this is really just the reverse of the previous example where we converted parts per million into percent. Of course, we'll do this with the factor label method as always. So we need to take the number we have, 21%, and put it over one to make it a fraction. Then we need to multiply that fraction by one. And we'll figure out how to express one so that we can get rid of the unit percent and get the unit parts per million. So we'll start with the conversion relationship. We know that 1% is the ...