Given the reaction: 2NaOH + H2SO4 → Na2SO4 + 2H2O
What is the total number of moles of NaOH needed to react
completely with 2 moles of H2SO4?
1-0.5
2-2
3-4
4-1

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?