## anonymous one year ago help please? how do i convert Convert 4.50 x 105 ng to Mg

1. JoannaBlackwelder

I would suggest to first convert to grams, then to Mg.

2. JoannaBlackwelder

Any ideas of how to do the first step?

3. anonymous

(1. 450000ng * 10^-9grams 1ng = .0045grams 2.) /0045grams * 1Mg 10^6 grams =4.5*10^-10Mg

4. JimDemers

Assuming thast your original number is $4.50 \times 10^{5} ng$ and that you want the number of mg, all you need to do is reduce the exponent by 6. (There are 1,000,000 ng in a mg.) That leaves you with $4.50 \times 10^{-1} mg$.