I know CL is chlorine and NA is sodium.
Metals on the left side, metalloids on the staircase, nonmetals on right side
Since the comb is positively charged, the hair will stick to the comb.
I think
Chloroplast, its where photosynthesis happens and the cell wall which only plants fungi and bacteria have.
The correct answer of the given question above would be option B. IRON 0.449. Based on the given details above about an unknown substance that has a mass of 14.7 g and the substance absorbs 1.323×102 J of heat, the temperature of the substance is raised from 25.0 ∘C to45.0 ∘C, most likely, the substance is IRON. Hope this answers the question.