Question

Care e masa a 3 moli de HCL

Answer 1

n=m/M. m=n×M=3×35,5=106,5

Answer 2

trebuie sa stiu ce masa are 1 mol=> calculez masa molara
M(miu)= (1gH+35,5gCl)/mol= 36,5g/mol
1mol ..are masa....36,5g
3mol........................x=....................calculeaza !!!!