Which energy change occurs in an operating voltaic cell?

(1) chemical to electrical

(2) electrical to chemical

(3) chemical to nuclear

(4) nuclear to chemical

Which of these elements exists as a solid at room temp and pressure? Chlorine, bromine and iodine. Why?

What is the difference between a sodium atom (Na) and a sodium ion (Na1+) ?

The mantle is: Othicker than the crust Ohotter than the core Omade of iron and silicon Oall of the above

If you mix together 50 mL of a strong acid and 50 mL of a strong base what would yo predict the pH of the new solution wouod be

What volume does 0.87mol of H2O (g) occupy 36.2oC and 1.25 atm? A 2.06L B 17.6L C 37.1L D 317L

What is the volume of 0.05 mol of neon gas at STP?

Which is NOT a property of gold? A. rare B. tarnishes C. malleable D. corrosion resistant

The element rubidium has two naturally occurring isotopes. The atomic mass of 85Rb (72.17 percent abundant) is 84.911794 amu. Determine the atomic mass of 87Rb (27.83 percent abundant). The average atomic mass of Rb is 85.4678 amu.

Describe what you can do to slow down, or stop the continuous negative human treatment of our aquatic biomes.

If the hydrogen ion concentration is 10-7M, what is the pH of the solution? Show all work.