Which types of orbitals are found in the principal energy level n = 2? O A.
S
OB.
s, f
O C. S. d
O D.
Sp
E.
s, p, d

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy

What do electromagnetic waves carry? how are they produced through which media can they move? where do they transfer energy? what do they not transfer? what do mechanical waves carry? how are they produced? through which media can they move? where do they transfer energy? what do they not transfer?

How many liters of oxygen gas, at standardtemperature and pressure, will react with 35.8 grams ofiron metal? 4 fe (s) + 3 o2 (g) → 2 fe2o3 (s)