Trộn 50mldd cacl₂ 1m + 150mld² k₂co₃ 1m
a) tính kl
b)tính nđ mol/l củad²sau pt

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.