!30 Points!
Using your periodic table, how many protons does an atom of Zinc (Zn) have in its nucleus? Explain your reasoning. How many electrons would it have? Explain your reasoning. If zinc has 35 neutrons in its nucleus, what is its mass number? (Mass # = # protons + # neutrons). Please show your work.

Write a paragraph at least 10 sentences explaining how rocks are used today in society

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

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.