For a gaseous carbon atom in its' ground state which of the following are possible sets of quantum numbers for two different electrons (electron 1 and electron 2) in the highest energy orbital(s)?
a. electron 1 electron 2 n l ml ms 2 0 1 –1/2, 2 1 1 +1/2.
b. electron 1 electron 2 n l ml ms 2 1 1 +1/2, 2 1 0 -1/2.
c. electron 1 electron 2 n l ml ms 2 0 0 –1/2, 2 0 0 +1/2.
d. electron 1 electron 2 n l ml ms 2 1 0 +1/2, 2 1 0 -1/2.
e. electron 1 electron 2 n l ml ms 2 1 0 +1/2, 2 1 -1 +1/2.

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?