# chemistry

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A student measures the mass of a book as 12,321g. What is the book's mass in kg?

• chemistry -

to convert to kg

1kg=1000g

• chemistry -

thanks, buti don't understand where to put the decimal in the answer!

• chemistry -

Hm..the decimal point?

lets see...

12,321g (1kg/1000g)= 12.321kg

• chemistry -

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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