What is the percent composition by mass of ammonium chloride in a saturated solution of ammonium chloride at 45°C

Draw the structure for 5-isopropyl-2-methyl-3-nonene

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.

Which statement describes covalent bases