Sulfonylurea hypoglycemic agents can be synthesized by the reaction of the sodium salt of an appropriate substituted benzenesulfonamide with a carbamic ester. The reaction mechanism involves the following steps: An amine reacts with diethylcarbonate to yield tetrahedral intermediate 1; Tetrahedral intermediate 1 loses ethanol to form carbamic ester 2; The sodium benzenesulfonamide reacts with carbamic ester 2 to form tetrahedral intermediate 3; Tetrahedral intermediate 3 loses ethanol to form the sulfonylurea. For the above sulfonylurea, identify the appropriate substituted benzenesulfonamide and amine. Write out the mechanism on a separate sheet of paper, and then draw the structure of tetrahedral intermediate 1.

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j