Roger poured water over a pile of sand. some of the sand washed away. this process is similar to which of the following? answerhide athe eruption of a volcanohide bthe erosion of the walls of a canyonhide cthe uplifting of mountain rangeshide dthe forming of dunes or mounds in a desert

What is the polyatamic ion of thiosulfate

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

Which element would mostly likely have an electron affinity measuring closest to zero