Question

cate grame de Carbon vor cuprinde acelasi numar de atomi ca 28 g de Azot

Answer 1

miu azot (N2) = 28 g/mol

miu carbon = 12 g/mol

1 mol de orice substanta cuprinde 6,0225xla23 particule in cazul nostr atomi

astfel ca:

niu = nr moli = masa/miu = 28/28 = 1 mol N2

=> ca cei 28 g azot contin 6,0225x10la23 atomi N

Daca 12 g C ..................... 6,0225x10la23 atomi

la m g .................................. 6,0225x10la23 atomi (cei de la azot)

=> m = 12 g C