Question

Cati moli se gasesc in 64g oxigen si 112oxid de calciu?Repede!!

Answer 1

64:2=32 se gasesc in oxigen

112:2=56 se gasesc oxid de calciu

Answer 2

[tex] A_{O } [/tex]=16
16 g O ....................1mol O
64 g O ....................x moli O
x=$\frac{64}{16}$=4 moli O
formula oxidului de calciu CaO
$M_{ClO}$= $A_{Ca}$+$A_{O }$
          =40+16
          =56
56 g CaO.............................................. 1 mol CaO
112 g CaO..............................................y moli CaO
y=$\frac{112}{56}$
y=2 moli CaO