Define isomer and isomerism.

isomer is two or more compounds with the same formula but different arrangement of atoms while isomerism is the relationship of two or more chemical species that are isomer.

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.