Scientific not'n avoids writing lots of zeroes. Recall these rules:






EXAMPLE:

NH = 2,000,000,000,000,000,000,000,000,000,000,000 / .000 000 000 000 000 000 000 001 67

YUCK!

This should be a review for you. If it's not, see p.4 in the text, Appendix 4 (p.A-18) in the text, or try these web pages: http://www.nyu.edu/pages/mathmol/textbook/scinot.html, http://library.advanced.org/20991/textonly/alg/sci_not.html, or http://janus.astro.umd.edu/astro/scinote.html.