Which factors determine how much gravity a body in the universe possesses?

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.

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

What is the name of the enzyme that forms at the start of transcription?