Provide a brief explanation of why furan (below) is aromatic. Your answer should identify the hybridization of the oxygen atom and account for which electrons are in the pi system. 
Definitions:
Lunar Months
A measure of time approximately equal to the natural cycle of the moon's phases, about 29.5 days.
Last Menstrual Period
The date of the first day of the most recent menstrual cycle, used as a standard point of reference in obstetrics to estimate pregnancy dates.
Pregnancy Length
The duration of pregnancy, typically measured from the first day of the last menstrual period to birth, approximately 40 weeks.
Fetal Heart Tones
The sounds or heart rate of a fetus as heard through devices like a Doppler during pregnancy check-ups, important for assessing fetal well-being.
Q2: Which of the following sets of substituents
Q19: The hybridization of the nitrogen atom in
Q20: Which of the following sets of reagents
Q26: What is the major organic product obtained
Q46: Draw two resonance structures of the reactive
Q52: What is the structure of stearic acid?<br>A)CH<sub>3</sub>(CH<sub>2</sub>)<sub>16</sub>COOH<br>B)CH<sub>3</sub>(CH<sub>2</sub>)<sub>7</sub>CH=CH(CH<sub>2</sub>)<sub>7</sub>COOH<br>C)CH<sub>3</sub>(CH<sub>2</sub>)<sub>18</sub>COOH<br>D)CH<sub>3</sub>CH<sub>2</sub>(CH=CHCH<sub>2</sub>)<sub>3</sub>(CH<sub>2</sub>)<sub>6</sub>COOH
Q52: What is the correct order of exothermicity
Q53: What is the major organic product obtained
Q87: What is the major organic product obtained
Q105: What is the major organic product obtained