Question

URGENTEEEE!
Ayudenme por favor a resolver los siguientes ejercicios

Answer 1

             Zn  +  H2SO4  →  ZnSO4 + H2

Mm Zn = 65.38 g/mol
  ZnSO4 = 161.44 g/mol

a) n de ácido

n = 345.87 g H2  x  1mol H2  x  1 mol H2SO4
                              ``````````````   ````````````````````
                               2 g H2SO4       1 mol H2

n = 172.94 moles de H2SO4

b) calcular gramos de Zinc

g Zn = 172.94 mol H2SO4  x  1 mol Zn  x   65.38 g Zn
                                              ````````````````   ```````````````
                                              1 mol H2SO4     1 mol Zn

g Zn = 11306.82

c) calcula moles de sulfato de zinc

n = 11306.82 g Zn  x  1mol Zn  x  1mol ZnSO4 
                                  ````````````    ```````````````````` 
                                  65.38 g Zn       1 mol Zn      

n = 172.94 moles ZnSO4

2.       H3PO4  +  3 LiOH → Li3PO4  +  3H2O

Mm H3PO4 = 98 g/mol
       Li3PO4 = 115.8 g/mol

n Li3PO4 = 43.89 g H3PO4 x 1 mol H3PO4    x   1 mol Li3PO4 
                                               ````````````````````      ````````````````````
                                                 98 g H3PO4          1 mol H3PO4

n = 0.447 moles de Li3PO4