The two most abundant elements in ocean water, besides hydrogen and oxygen, are

A) salt and sodium.

B) salt and chlorine.

C) sodium and calcium.

D) sodium and chlorine.

What was your hypothesis? Plot your data as drops of ascorbic acid vs. time. As the concentration of ascorbic acid was increased, did the rate of the formation of the iodine-starch complex increase or decrease?

A gas mixture contains CO, Ar and H2. What is the total pressure of the mixture, if the mole fraction of H2 is 0.35 and the pressure of H2 is 0.58 atm?

What happens to a sample of matter when it's particles lose kinetic energy?

What does the following H2O (s) H2O (l) H2O (g) ? but the two in all is down not up

Which term describes the total voltage of a redox reaction that is nonspontaneous? O A. Positive O B. Zero O C. Nonzero O D. Negative

Calculate the volume of a 0.323-mol sample of a gas at 265 K and 0.900 atm.

What is the molar mass of the following substance : Cs2CO3

What does the velocity of a wave describe

Sulfur (S) has 16 protons and 16 neutrons. How many electron shells does an element of sulfur have?

Which one of the following statements about orbital energies is incorrect? A) The energy of a given orbital increases as the nuclear charge Z increases. B) In many-electron atoms the energy of an orbital depends on both n and l.