How many moles of ammonia contain 1.51×10^24 nh3 molecules?

What is limiting reactant? with examples

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

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