When an oxide of potassium is decomposed 19.55g of K and 4.00g of O are optioned what is the empirical and molecular formula??

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.

wher is the rest of the question