Chem help! asap plz!?

0 ⤊

Chem help! asap plz!?

i NeeD to use Unit Anayalsis for this.
conversions
261nm to millimeters

2006-10-04 16:24:55 · 2 answers · asked by Stephanie 3 in Education & Reference ➔ Homework Help

can u please it explain, so i can understand it?

2006-10-04 16:25:26 · update #1

2 answers

milli = 1/1000 = 10^-3 = .001 = one thousandth
nano = 1/1000000000 = 10^-9 = .000000001= one billionth

261nm or 261 * 1/1000000000m = .000000261m
But, you don't want number of meters, you want number of millimeters or thousandths of a meter. So, go back 3 decimal places to .000261 millimeters.

2006-10-04 23:03:22 · answer #1 · answered by quntmphys238 6 · 0⤊ 0⤋

261nm * 1m * 1000mm
--------- ---------- = 2.61^14mm
1*10^-9nm 1m

2006-10-04 16:33:38 · answer #2 · answered by -xue- 3 · 0⤊ 0⤋