203conversions

203conversions - UNIT CONVERSIONS Glenn V. Lo Department of...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
    UNIT CONVERSIONS Glenn V. Lo Department of Physical Sciences Nicholls State University
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
    Unit Conversions Often, we find it necessary to convert a  measurement in reported in one unit to  another unit.  Ex. 25.00 inch = _? _ cm  In general, all we need to do multiply  the known measurement with a  conversion factor .  Example: (25.00 inch) x (conversion factor)
Background image of page 2
    Simple Conversion, Step 1  Look up (or recall from memory) and  write down the relationship between the  original unit and the desired unit.  Example: Problem: 25.00 inch = _? _ cm Look up relationship between inch and cm: 1 inch = 2.54 cm
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
    Simple Conversion, Step 2 Write down two possible conversion  factors based on the relationship.   Example: From “1 inch = 2.54 cm” the  two possibilities are: 1 inch 2.54 cm OR 2.54 cm 1 inch
Background image of page 4
    Simple Conversion, Step 3 Multiply the known measurement with  the conversion factor that allows you to   cancel the original unit.  Round off  answer to correct number of sig.figs. 25.00 inch  x 2.54 cm 1 inch = 63.50 cm NOTE: In general,  numbers in conversion factors are  defined to be exact .  Number of sig.figs. is the same  In the original and converted measurement.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
    Another Example, Step 1  Look up (or recall from memory) and  write down the relationship between the  original unit and the desired unit.  Example: Problem: 6.25 cm = _? _ m Write down the relationship between cm  and m: 1 m = 100 cm, or 1 cm = 0.01 m
Background image of page 6
    Another Example, Step 2 Write down two possible conversion  factors based on the relationship.   Example: From “1 m = 100 cm” the two  possibilities are: 1 m 100 cm OR 100 cm 1 m
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
    Another Example, Step 3 Multiply the known measurement with  the conversion factor that allows you to   cancel the original unit.  Round off  answer to correct number of sig.figs.
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/11/2009 for the course CHEM 105 taught by Professor Wessel during the Spring '08 term at Nicholls State.

Page1 / 30

203conversions - UNIT CONVERSIONS Glenn V. Lo Department of...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online