chemistry
posted by Silverfox .
please explain the dimensional analysis, and atomic structure?
The conversion table for metric to English and English to metric?
Dimensional analysis is the procedure for changing from one unit to another. For example, convert 12 inches to centimeters. The conversion step is as follows:
12 inches x factor = ??cm
Now for the factor. Actually, there are two factors. We know there are 2.54 cm in 1 inch. So the factors are
1 in/2.54 cm AND
2.54 cm/1 in.
So all we need to do in a conversion is use the right factor. Everything else is in place. We have a 5050 chance of getting the right factor by chance; we use a little common sense and we get it right every time.
Back to the original which is
12 inches x factor = ??cm
We want the factor to be arranged so that the unit we don't want to keep (in this case inches) cancels and the unit we want to keep (in this case cm) stays. So we make the factor 2.54 cm/1 in and put that in for the factor.
12 inches x factor = ??cm.
12 inches x (2.54 cm/1 in) = ??
You see inches in the numerator cancels with the in (for inches) in the denominator and that is the unit we want to get rid of. The cm in the numerator stays and that is the one we want to stay because we want the new units in cm. That's all dimensinal analysis is.
As for atomic structure, that is a couple of chapters in a text. We shall be happy to help if you narrow your question a little. Thanks for using Jiskha.
Respond to this Question
Similar Questions

science
whats my height in meters? my height is 5'3" 63 inches x 2.54 cm/inch = 160.0 cm = 1.600 meters You learn to do these by dimensional analysis. We know there are 39.37 inches in 1 meter. First, convert your height to inches so we are 
chem
What is the disadvantage of the English system? 
Science
Is there an easier way to understand how to convert gallons to liters I am having problems understanding the whole metric conversion process. I don't know what method you are using so I don't know if I know an easier one or not. I … 
Chemistry (Check)
Completion 1)1 2)conversion factor 3)change 4)Dimensional anaylsis 5) Whenever two measurement are equal, or equivalent, a ratio of these two measurements will equal ___1____. A ratio of equivalent measurement is called a ___2___. … 
Chemistry
Unfortunately I was hit by the sweep of illnesses going around due to changing whether and missed school today. Thus I missed the notes in Chemistry leaving me completely confuzzled about tonights homework on Dimmensional analysis … 
chemistry
How do I solve this question using dimensional analysis? 
history ish
The U.S is the only country currently not using the metric system as its primary system of measurement. Imagine uou have been appointed to the Board in the US Trade and Commerce department that is trying to rewrite the metric conversion … 
PreAlgebra
Victoria you helped me with the last problem can you help me again with this one please? 
PreAlgebra Checkk
1. Convert the rate using dimensional analysis. 30 miles/hour = _______ feet/second a. 0 b. 44 c. 43 d. 2 answer: b 2. Convert the rate using dimensional analysis. 16 feet/second = _____ yards/minute a. 240 b. 120 c. 10 d. 320 answer: … 
Algebra I
**Match each word or phrase w/ its definition** Word Bank: A) least common multiple (LCM) B) repeating decimal C) reciprocals D) dimensional analysis E) terminating decimal F) least common denominator (LCD) G) multiple ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ …