What is the common head loss equations, any trick equation that applies to most scenarios?
also what’s the relationship between reynolds number and turbulent/ laminar flow
which equations is reynolds number used for ?

What is the h+ concentration for an aqueous solution with poh = 4.01 at 25 ∘c? express your answer to two significant figures and include the appropriate units.

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)