The class of semiconductors, known as elemental, has special features. These are ________.
A) band gap and individual element valence electrons
B) periodical table grouping and diamond crystal structure
C) tetrahedral coordination geometry and sp2 hybrid orbitals
D) overlapping hybrid orbitals and filed conduction bands
E) none of the above
Question 2
Sodium bicarbonate is reacted with concentrated hydrochloric acid at 37.0 C and 1.00 atm. The reaction of 6.00 kg of bicarbonate with excess hydrochloric acid under these conditions will produce ________ L of CO2.
A) 1.09 102
B) 2.85 104
C) 1.82 104
D) 8.70 102
E) 1.82 103
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