Which substance is an example of an element?
a) bronze
b) copper
c) methane
d) rust

What happens to the temperature of a substance when the average kinetic energy of its particles increases?

How many moles of kci are produced from 2.50 moles k

Iron (fe) reacts with copper sulfate (cuso4) to form iron (ii) sulfate. in this reaction, cu2+ gains electrons to form cu. which statement is true about this reaction? fe(s) + cuso4(aq) → feso4(aq) + cu(s)