Which is di- used in the name of a hydrocarbon?

Based on its chemical properties, identify the position of each chemical family on the periodic table.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

How does blood clotting prevent the entry of pathogens through cuts and wounds? answer asap,, this is due tomorrow. will mark as brainliest or whatever you call it : )