Răspunsuri

2014-10-01T13:15:08+03:00
Folosesti nr lui Avogadro 6,023 * 10 la 23
Un mol de substanta contine nr lui Avogadro molecule
1 mol CaO.........6,023 * 10 la 23 molecule
x moli CaO............12,046 * 10 la 29 molecule
x = 2 kmoli CaO = 2000 moli CaO