Given that pressure cooker bombs can be created using information readily available online, why does romero believe the boston bombers had some level of experience in creating bombs?

"the periodic table is arranged in order of atomic number."

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

answersilicon (si); oxygen (o);