1. the wavelength of light is 589 nm (nano metre). wat is its orde of magnitude in metre???????( 1 nano mtre = 10 to the power of minus 1. ) i need the working and can u pleae explain too. i`ll be really thankful!
2. the radius of a hydrogen atom is 0.5 angstrom. find the order of magnitude of volume of (a) one hydrogen atom, (b) 1 mole hydrogen. given that 1 mole of hydrogen has 6.02 multipled 10 power of 23 hydrogen atoms.
(hint- volume = 4/3 pie r cube (r is the radius))
i need to know how to do it with working!!!
2006-06-09 20:58:36 · 5 answers · asked by Anonymous in Society & Culture ➔ Community Service
hello........nano is -9......
nano meter is 10 power -9 meter.......
1.
so 589 nm = 589 x 10^(-9) m...........
centi meter = 10^(-2) meters....
milli meter = 10^(-3) meters.........so on
hexa = 16
peta = 15
tera = 13
giga = 9
mega = 6
kilo = 3
exo = 2
deca =1
deci = -1
centi = -2
milli = -3
micro = -6
nano = -9
pico = -12
femto = -15
atto = -16
2.
a) radius = 0.5 angstrom = .5 x1 x 10^(-10) meters
so , volume of one atom = (4/3) x pi x (radius cubed)
= 4/3 x (3.14) x (.5x10^(-10))^3
= 5.23598 x 10^(-31) meter cube
b) just multiply ans of a) by 6.02 x 10^(23)
= volume of one atom x no of atoms
=5.23598 x 10^(-31) x 6.02 x 10^(23)
= 3.15206 x 10^(-7) meter cube
2006-06-09 21:50:07 · answer #1 · answered by raj_6c1 4 · 0⤊ 0⤋
i got a headache by the 2nd sentence.
don't you a book where you can follow some examples for you to help learn it.
2006-06-10 00:34:33 · answer #2 · answered by babykillar 4 · 0⤊ 0⤋
It's too Boring to answer
2006-06-09 21:02:08 · answer #3 · answered by . 3 · 0⤊ 0⤋
Too early in the mprning for this crap.
2006-06-09 21:07:02 · answer #4 · answered by bad_bob_69 7 · 0⤊ 0⤋
a read the wavelength of light is ........sorry but couldnt be bothered reading it, but thanks for the 2points lol
2006-06-09 21:49:37 · answer #5 · answered by metal_bub 3 · 0⤊ 0⤋