Question

Dau inima și coroana !!
Plss !!Urgentt !!

Answer 1

Răspuns:

Bună!

1. 4Al +3O2 → 2Al2O3

4 moli Al........3 moli O2

x moli Al.........5 moli O2 => x=4×5/3=20/3=6,66 moli Al

2. Na2O + H2O → 2NaOH

1 mol Na2O.......2 moli NaOH

5 moli Na2O.....y moli NaOH => y=2×5/1=10 moli NaOH

3. Mg + Cl2 → MgCl2

1 mol Mg........1 mol MgCl2

10 moli Mg.....z moli MgCl2 =>z=10×1/1=10 moli MgCl2

4. CaO + H2O →Ca(OH)2

1 mol CaO........1 mol H2O

x moli CaO......5 moli H2O => x=1×5/1=5 moli H2O.

Sper că te-am ajutat!