Un borano (formado por boro e hidrogeno) contiene 88.5 % de boro. Determine su fórmula molecular si su masa molecular es 122,0 g/mol. Masa atómica del B = 10,81 g/mol

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids

Which metal exist in liquid state and can be cut with knife ?

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3