1) 1 mol NaCl...........23g Na...........35,5g Cl
5 moli.....................x....................y
x=23*5=115g Na
y=5*35,5=177,5g Cl (a)
2) M HCl=1+35,5=36,5
36,5g HCl............1g H........ 35,5g Cl
146g.....................a................b
a=146/36,5=4g H
B=146*35,5/36,5=142g Cl