Question

Repede va roggggg!!!!!​

Answer 1

Răspuns:

Explicație:

csol. HCl= 10,45%

ro= 1,o5 g/mL

Vs= 1 L

nr. moli HCl

ro = ms : Vs

ms= ro . Vs

ms= 1,05 g/ml . 1000mL= 1050 g sol. HCl

md= c . ms : 100

md= 10,45 . 1050 : 100= 109,725 g HCl

n= m : M

M HCl=1 + 35,5=36,5 ------> 36,5g/moli

n= 109,725g : 36,5g/moli= 3,006 moli HCl