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 dont 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?

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