Posted by Rachael on Thursday, August 23, 2007 at 3:37pm.
A student measures the mass of a book as 12,321g. What is the book's mass in kg?

chemistry  ~christina~, Thursday, August 23, 2007 at 3:41pm
to convert to kg
1kg=1000g 
chemistry  Rachael, Thursday, August 23, 2007 at 3:45pm
thanks, buti don't understand where to put the decimal in the answer!

chemistry  ~christina~, Thursday, August 23, 2007 at 3:51pm
Hm..the decimal point?
lets see...
12,321g (1kg/1000g)= 12.321kg 
chemistry  Ms. Sue, Thursday, August 23, 2007 at 3:55pm
You can divide 12,321 by 1,000 on your calculator. What do you get?
Or  since you're dividing by 1,000 which has has 3 zeroes, move the decimal point 3 places to the left.
Does your answer make sense? Would you expect the book to have more or less grams than kilograms?