Răspuns:
Z=p=e=26
n=A-Z=56-26=30
niu=N/N,A= 12,014X10²⁴/ 6,02310²³mol=20mol
M,mediu= c1xA1/100+c2xA2/100+ c3xA3/100
= 0,97x16+0,002x17+0,001x18=....................
M,H2SO4=98g/mol
m= niuxM= 0,2molx98g/mol=............
M,MgCo3=84g/mol
niu=m/M=300g/84g/mol=...........................
finalizeaza calculele unde am pus..................
Explicație:
