Listen During a laboratory activity, appropriate safety equipment was used and safety procedures were followed. A laboratory technician heated a sample of solid
KCIO, in a crucible to determine the percent composition by mass of oxygen in the compound. The unbalanced equation and the data for the decomposition of
solid KCIO3 are shown below.
KCIO(3) -- KC) 00
Lab Data and Calculated Results
Object or Material
empty crucible and cover
empty crucible, cover, and KCIO
KCIO,
crucible, cover, and KCl after heating
KCI
o
Mass
(9)
22.14
24 21
207
23.41
?
0.80
Based on the lab data, show a numerical setup to determine the number of moles of Oz produced. Use 32 g/mol as the gram-formula mass of O2