Human activities can accelerate the process of a) physical weathering b) chemical weathering c) both

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

How are isotopes of the same chemical element alike? how are they different?