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Nata [24]
3 years ago
10

Write a balanced chemical equation, including physical state symbols, for the decomposition of solid sodium azide (NaN3) into so

lid sodium and gaseous dinitrogen. Suppose 22.0 L of dinitrogen gas are produced by this reaction, at a temperature of 11.0 C and pressure of exactly 1 atm. Calculate the mass of sodium azide that must have reacted.

Chemistry
1 answer:
LenaWriter [7]3 years ago
5 0

Answer:

39g

Explanation:

Details of the solution is shown below. From the information provided regarding the N2 produced, we could calculate the amount of N2 produced and use that to find the mass of sodium azide reacted.

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According to this question, 3.425g of lead oxide was reduced to form 3.105g of lead in an experiment. Since lead oxide contains both lead (Pb) and oxygen (O) element,

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Next, we convert each mass value to mole by dividing by respective molar mass

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Next, we divide each mole value by the smallest (0.0149)

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Multiply each ratio value by 3 to get:

Pb = 1 × 3 = 3

O = 1.342 × 3 = 4.026

The whole number ratio, approximately, of Pb and O is 3:4, hence, their empirical formula is Pb3O4.

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