Write the merits and demerits of Mendeleev periodic table in points and explain each of them in short​

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains