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Cate molecule se afla intr-un metru cub de hidrogen? Dar intr-un kilogram?

Răspuns :

a) 1m³=1000l
1mol H2.......22,4l.....6,023*10²³ molecule
....................1000l.....................x molecule
x=6023*10²³/22,4=268,88*10²³ molecule H2
b) 1kg=1000g
1mol..........2g.......6,023*10²³ molecule
............1000g........................y molecule
y=6023*10²³/2=3011,5*10²³ molecule H2