what is the corred order of reactivity (most reactive to least reactive) towards electrophilic aromatic substitution

If 200.0g of copper(ll) sulfate react with an excess of zinc metal, what is the theoretical yield of copper

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.

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?