If 0.586 grams of lead reacted with oxygen and 0.677 grams of the lead oxide is...

Question

Question

If 0.586 grams of lead reacted with oxygen and 0.677 grams of the lead oxide is formed, what is the empirical formula of the

Answer 1

Answer #1

Moles of Pb = (0.586 g) / (207.2 g/mol) = 0.0028 mol

weight of oxygen in lead oxide = 0.677 g - 0.586 g = 0.091 g

moles of Oxygen = (0.091 g) / (16 g/mol) = 0.00568 mol

Simplest mol ratio

Pb = (0.0028 mol) / (0.0028 mol) = 1

O = (0.00568 mol) / (0.0028 mol) = 2

Empirical formula is: PbO₂

Answer 2

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