Răspuns:
1. m,balon gol= 118,5g
v,balon= 250ml
m,balon umplut= m,balon gol= m,apa--> m,apa= 366-118,5=> 247,5 g
ro= m/v= 247,5g/250ml= 0,99g/ml
2
m,sol.soda= ro xv= 1,43g/mlx250ml=357,5g
m,balon umplut=m,balon gol+ m,sol=118,5 +357,5=>476g
atentie 1ml=1cm³
Explicație:
