![Kalanaur: To enforce Covid rules, health dept hoardings show patient in O2 mask | Chandigarh News - The Indian Express Kalanaur: To enforce Covid rules, health dept hoardings show patient in O2 mask | Chandigarh News - The Indian Express](https://images.indianexpress.com/2021/05/Hoarding.jpg)
Kalanaur: To enforce Covid rules, health dept hoardings show patient in O2 mask | Chandigarh News - The Indian Express
Dansk Kemi - GRUNDSTOFFER FRA A til Z: OXYGEN Oxygen er grundstof nummer 8 i det periodiske system. Grundstoffet har en molekylevægt på 15,9994 g/mol og er placeret i periodesystemets 16. gruppe.
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