cobalt has an atomic mass of 59 and an atomic number of 27. which statement correctly describes an atom of cobalt .

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘