The calorie content of a peanut is measured by burning it beneath a can of water and measuring the temperature change of the water. Which of these is a possible source of error? (A) Th e initial mass of the peanut is measured incorrectly. (B) Some of the heat of combustion is transferred to the air. (C) Some unburned remnants of the peanut are lost before fi nding the fi nal mass. (D) All of the above. (E) None of the above.
Monday, September 25, y Week 4 Notes Organic Chemistry As the number of carbons increase, boiling point increases Straight carbon chain has a higher boiling point than a branched carbon chain due to surface area Newman Projection a type of diagram visualizing carbon conformation structure • Conformer rotation from one position to the next eclipsed bonds are in front of each other, not all atoms are visible • atoms are repulsing each other • higher energy; less stable • 60 degree rotation from staggered conformation staggered bonds are inbetween each other where all atoms are visible • lower energy; more stable • anticonfirmation staggered confirmation where methyl groups are farthest apart most stab
