Răspuns:
1)
MC=12g/mol
n=m/M=360/12=30moli C
1mol C..........6,023x10²³atomi
30mol..............x atomi
x=30x6,023x10²³atomi/1=calculeaza
2)
MMg=24g/mol
n=m/M=480/12=40moli Mg
1mol C..........6,023x10²³atomi
40mol..............y atomi
y=40x6,023x10²³atomi/1=calculeaza
Explicație:
