Respuesta :

dexteright02
Data:
n (number of mols) = ? 
V (volume) = 2.50 Liters 
If: 
1 L → 1000 g
2.50 L → y

y = 1000*2.50 = 2500 g

Therefore:
m (mass) = 2500 g

Now:
Molar Mass (MM) of oxygen = 16 g/mol

Formula:
[tex]n = \frac{m}{MM} [/tex]

Solving:
[tex]n = \frac{m}{MM} [/tex]
[tex]n = \frac{2500\:\diagup\!\!\!\!\!g}{16\:\diagup\!\!\!\!\!g/mol}[/tex]
[tex]\boxed{\boxed{n = 156.25\:mols}}\end{array}}\qquad\quad\checkmark[/tex]




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