Concentrations of Solutions (Section)
The average adult male has a total blood volume of 5.0 L. After drinking a few beers, he has a BAC of 0.10 (see Exercise). What mass of alcohol is circulating in his blood?
The concentration of alcohol (CH3CH2OH) in blood, called the “blood alcohol concentration” or BAC, is given in units of grams of alcohol per 100 mL of blood. The legal definition of intoxication, in many states of the United States, is that the BAC is 0.08 or higher. What is the concentration of alcohol, in terms of molarity, in blood if the BAC is 0.08?
Blood 5 liters of this liquid tissue in the body (1.5 gallons) o 8% of body weight Temperature near 100 degrees F, higher than normal body temp, mechanism by which we change body temp o Increase- divert blood towards core o Decrease- divert more blood to the surface of our body and the blood is exchanged with the heat of the atmosphere o Mechanism of heat exchange Functions o Delivers oxygen Takes oxygen from the lungs to active cells- the electric acceptor to make ATP for energy and nutrients- to cells that need them o Transports metabolic wastes Carries away waste from cells, most of the time CO2 o Transports hormones o Maintains body temperature o Maintains body pH Blood contains buffers that will resist change to pH o Maintains fluid volume Has components that prevent loss, clotting factors o Prevents infection Components o Formed elements Erythrocytes Carry respiratory gases CO2 and oxygen 2 of the 5 liters of blood are RBC 45% RBC no longer living cells, get rid of organelles now only a machine to carry oxygen Leukocytes WBC 5 different types all with unique functions All true cells, have nuclei and cytoplas