Ibuprofen, an anti-inflammatory, has the formula C13H18O2\mathrm{C_{13}H_{18}O_2}C13H18O2. What is the molar mass of ibuprofen?
A scuba diver's 2−ft32-\mathrm{ft}^{3}2−ft3 air tank is to be filled with air from a compressed air line at 120 psia120 \mathrm{~psia}120 psia and 100∘F100^{\circ} \mathrm{F}100∘F. Initially, the air in this tank is at 20 psia20 \mathrm{~psia}20 psia and 70∘F70^{\circ} \mathrm{F}70∘F. Presuming that the tank is well insulated, Find the temperature and mass in the tank when it is filled to 120 psia120 \mathrm{~psia}120 psia.
Define mycotoxin. Give an example of a mycotoxin.
Explain how temperature and rainfall affect the distribution of biomes.