Question

quantas moleculas de cloro, cl2 ha em 12 g de gas Mc12 =71g/mol

Answer 1

Olá!!!

Penso que a questão é:

Quantas moléculas há em 12g do gás cloro (Cl2).

MM(Cl2) = 2•35,5 = 71g/mol

1 mol -------- 6,02•10²³

1 mol = 71g


71g ------------ 6,02•10²³
12g ------------- X

X = 1,01•10²³ moléculas.





From: Moçambique

Answer 2

$\sf{observe~os~dados~que~podemos~extrair~do~g\acute{a}s}\\\sf{1~mol~de~mol\acute{e}culas}\\\sf{6\cdot10^{23}mol\acute{e}culas}\\\sf{2~mols~de~\acute{a}tomos}\\\sf{2\cdot6\cdot10^{23}\acute{a}tomos}\\\sf{71g}\\\sf{44,8L}$

$\sf{vamos~relacionar~a~quantidade~de~mol\acute{e}culas}\\\sf{com~a~massa:}\\\sf{71g\longrightarrow6\cdot10^{23}mol\acute{e}culas}\\\sf{12g\longrightarrow x}\\\sf{x=\dfrac{72\cdot10^{23}}{71}}\\\huge\boxed{\boxed{\boxed{\boxed{\sf{1,01\cdot10^{23}mol\acute{e}culas}}}}}$