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This is about hydrogen bonding. 1. Can covalent bonds and hydrogen bonds be in the same...

This is about hydrogen bonding.
1. Can covalent bonds and hydrogen bonds be in the same molecule?
2. Do they(covalent bonds) have to be present for Hydrogen bonding to take place?
3. And if so are Covalent bonds stronger then the Hydrogen bond? Is this always the case?
4. And what is the significance of knowing that covalent bonds are stronger? (Does it tell us any properties, or ...idk)

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