J.R. S. answered 02/23/21
Ph.D. University Professor with 10+ years Tutoring Experience
I'll do a few, and you should be able to do the others.
1. 78000 grams = 7.8000 x 104
2. 54.056 cubic meters = x 10
3. .00650 hectoliters = 6.50 x 10-3
4. 100000 kiloseconds = x 10
5. .000005 Megamoles = x 10