Question

rezolvatimi si mie urmatoarele Masa moleculara a) metal ch4 b) acid azotic hno3 c) acod clor hidric hcl d) carbonat de calciu ca co3 e) fostfat de calciu ca3 (po4)2     repede

Answer 1

a) Mr=4*1+12=16
b) Mr=1+14+16*3=63
c)Mr=1+35.5=36.5
d)Mr=40+12+16*3=100
e)Mr=40*3+(31+16*4)*2=310