Question

Ex 4 punctele d) si e) :((

Answer 1

Răspuns:

Explicație:

d, in(165+153)g amestec.....3molO........3x6,023x10²³ atomiO\

      X............................................................18,069x10²⁴ atomi

x= 318 x10g= 3180g= 3,18kg

e.(2x165+3x153)g amestec........(2mol+6mol)O...........8x16gO

  x.......................................................................................12,8g

x= 789/10g= 78,9g amestec