’ž8 4 . W e n o t e t h a t 3 . 8 2 d a y s i s 3 3 0 0 4 8 s , a n d t h a t a b e c q u e r e l i s a d i s i n t e g r a t i o n p e r s e c o n d ( s e e § 4 3 - 3 ) . F r o m
E q . 3 4 - 1 9 , w e h a v e
T 1 / 2
N R B q 3 3 0 0 4 8 s a t o m s
= = 1 . 5 5 × 1 0 5 = 7 . 4 × 1 0 1 0
V V l n 2 m 3 l n 2 m 3
w h e r e w e h a v e d i v i d e d b y v o l u m e V . W e e s t i m a t e V ( t h e v o l u m e b r e a t h e d i n 4 8 h = 2 8 8 0 m i n ) a s f o l l o w s :
L i t e r s 1 m 3 b r e a t h s
2 4 0 ( 2 8 8 0 m i n )
b r e a t h 1 0 0 0 L m i n
w h i c h y i e l d s V H"2 0 0 m 3 . T h u s , t h e o r d e r o f m a g n i t u d e o f N i s
N a t o m s
( V ) H" 7 × 1 0 1 0 2 0 0 m 3 H" 1 0 1 3 a t o m s .
V m 3
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