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Porcelain Bead
mass of lead in lead oxide?
In an experiment to find te empirical formula of some lead oxide, a small porcelain dish was weighed, filled with lead oxide and weighed again. The dish was placed in a tube, and was heated in a stream of hydrogen. The hydrogen reduced the lead oxide to a bead of metallic lead. When the apparatus was cool, the dish with its bead of lead was weighed.
Mass of porcelain dish = 17.95g
Mass of porcelain dish + lead oxide = 24.80g
Mass of porcelain dish + lead = 24.16g
calculate the mass of lead in the lead oxide…
pls…help me out??!!
mass lead oxide = 24.80 – 17.95 =6.85 g
mass lead = 24.16 – 17.95=6.21
mass lead in lead oxide = 6.85 – 6.21=0.640 g
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