F 465cm3 of sulphur (iv)oxide diffused through a porous partition in 40 seconds, how long will 620cm3 of hydrogen sulphide take to diffuse through the same partition under the same conditions.

What does the process of natural selection involve

Identify a specific example for each type of technology

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.)