What does the 20 in 20TiO2 mean?
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annotation of samples is given in. Table 1. ... 0-R. A-PR. -20. 0. 2. 4. 6. 8. 10. H. 2 evolution amount (. μL h. -1 cm. 2. ) means 0.
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Answer:
40
Explanation:
i think
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