How is the 2s orbital different than the 1s orbital? (Choose all that apply) The 1s orbital has a different value for the l quantum number.
The 1s has fewer nuclear nodes. The 2s orbital extends farther from the nucleus than the 1s.
The 1s orbital has a higher energy than the 2s orbital.
The 2s orbital is better at screening the outer orbitals than the 1s orbital.
The 2s has more spherical radial nodes.
The 2s orbital can have more values of the ml quantum number than the 1s can.

How is the composition of a meteorite relevant to finding out the composition of earth's core?

A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.

What is the molar mass of ca(cio4)2