Question

M(Zn)=13г |m(Cl)г |-----------------|m(ZnCl2)-? |

Answer 1

M(ZnCl2)=68г
M(ZnCl2)=65+35,5*2=136
n=m/M
n(ZnCl2)=68/136=0,5моль

Answer 2

To determine the molar mass of ZnCl2, we need to calculate it based on the molar masses of Zn and Cl.

Given: M(Zn) = 13 g/mol (molar mass of Zn) M(Cl) = ? g/mol (molar mass of Cl) M(ZnCl2) = ? g/mol (molar mass of ZnCl2)

To find the molar mass of Cl, we need to know its value. The molar mass of chlorine (Cl) is approximately 35.45 g/mol.

Using this information, we can calculate the molar mass of ZnCl2.

M(ZnCl2) = M(Zn) + 2 × M(Cl) = 13 g/mol + 2 × 35.45 g/mol = 13 g/mol + 70.9 g/mol = 83.9 g/mol

Therefore, the molar mass of ZnCl2 is approximately 83.9 g/mol.