Answered

If the oxide contains 22.24 % O by mass, what is the identity of the metal?
Express your answer as a chemical symbol.

Answer :

The identity of the metal is lead (Pb).

What is metal?

A substance with high electrical conductivity, luster, and malleability, which readily loses electrons to form positive ions (cations) are called metals.

ω(O) =22.24% ÷ 100%.

ω(O) = 0.2224; mass percentage of oxygen in the oxide.

If we take 100 grams of compound:

1) m(O) = ω(O) * 100 g.

m(O) = 0.2224 * 100 g.

m(O) =22.24 g; mass of oxygen in the oxide.

n(O) = m(O) ÷ M(O).

n(O) = 22.24g ÷ 16 g/mol,

n(O) = 1.39 mol; amount of oxygen.

2) m(M) = 100 g - 22.24 g.

m(M) = 77.76g; mass of metal in the oxide.

n(O) = n(M) = 77.76 mol.

M(M) = m(M) ÷ n(M).

M(M) = 77.76 g ÷ 1.39 mol.

M(M) =55.94 g/mol; molar mass of the metal.

Therefore, The identity of the metal is lead (Pb)

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https://brainly.com/question/2874869

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