Zinc oxide can be produced by the following reaction:
2 Zn (s) + O2 (g) → 2 ZnO (s)
There are many uses for ZnO, but one is a heat-reflective coating on windows (thus lowering cooling demands in hot climates). This coating requires a thin layer (approximately 40-50 µm thick) of zinc oxide.
Assume that this thin film uses 1.9x1020 Zn atoms per cm2 of surface. How many grams of ZnO are added to a window that has an area of 5500 cm2?
The answer to your question is provided in the image:
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