Triacylglycerols, with their hydrocarbon-like fatty acids, have the highest energy content of the major nutrients. Answer the questions about energy reserves in adipose tissue. Assuming that 15% of the body mass of a 70.0 kg adult consists of triacylglycerols, calculate the total energy reserve, in units of kilojoules and kilocalories, that is available from triacylglycerols. energy reserve: kJ kJ = = kcal kcal If the basal energy requirement is approximately 8,400 kJ/day (2,000 kcal/day), calculate the amount of time that this 70.0 kg person could survive if the oxidation of fatty acids stored as triacylglycerols were this person's only source of energy. time: days days Calculate the weight loss in pounds per day under the starvation conditions in the previous part ( 1 lb = 0.454 kg) (1 lb=0.454kg) . weight loss: lb / day

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when it’s still hot? separation: filtration of precipitatewhy don’t we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesn’t recrystallize prematurely.analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and “synthetic” salicylic acid is 151-154oc?

The excretory system,need answers for all: )