Question

help please?
how do i convert Convert 4.50 x 105 ng to Mg

Answer 1

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

Answer 2

Any ideas of how to do the first step?

Answer 3

(1. 450000ng * 10^-9grams
1ng
= .0045grams

2.) /0045grams * 1Mg
10^6 grams
=4.5*10^-10Mg

Answer 4

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
\[4.50 \times 10^{-1} mg\].