2. How many moles of copper are needed to react with sulfur to produce 0.25 moles of
copper(t) sulfide according to the following reaction:
2 Cu + S + Cu2S

What is the overall order of reaction for rate = k[no2]2 ? second order 3/2 order third order zero order none of the listed answers are correct

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases