The atomic mass of beryllium (be) is 9.01 amu. the atomic mass of calcium (ca), which is in the same group as beryllium, is 40.08 amu. based only on this information, what would you predict to be the atomic mass of magnesium (mg), which is also in the same group but is between be and ca?

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.

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

Chemistry worksheet - i am not sure what they are asking for exactly?