Question

M(C2O)=5,6г найти:m(HCl)

Answer 1

Вообще легко

CaO+2HCl=CaCl2+H2O 

n(CaO)== 5,6г:56 г/моль=0,1 моль

n(CaO)=n(CaCl2)=0,1 моль

 m(CaCl2)=M*n=111г/моль*0,1 моль=11,1 г

Ответ:m=11,1г

Answer 2

To find the molar mass of HCl (hydrochloric acid), we need to consider the atomic masses of hydrogen (H) and chlorine (Cl) and add them together.

The atomic masses of hydrogen and chlorine are approximately:

• Hydrogen (H): 1.008 g/mol
• Chlorine (Cl): 35.453 g/mol

Now, we can calculate the molar mass of HCl:

Molar mass of HCl = M(H) + M(Cl) = 1.008 g/mol + 35.453 g/mol ≈ 36.461 g/mol

So, the molar mass of HCl is approximately 36.461 grams per mole.