1

2H 2H + O 2O ( g) 2(g) 2 ( g)

3O 2O 2 3

2 1 v c 2

1 2 1 v c 2

*

2 1991 9 26 3.15 3800 4 4 8 2

Kelvin scale

4 0.10 60 1993 12 250K 1

1 1 3 0.6 1 0.2 0.007 142