Answer:
5.17×10^21 ng
Explanation:
I assume you meant Tg if yes, the answer is this:
T is 10^12
5.17 Tg is 5.17×10^12 g
and n is 10^-9. but as we're converting g to ng, we don't include the - .
so now all we have to do is to put them all together!
5.17×10^12×10^9= 5.17×10^21 ng
if anything is unclear, ask me.
