PLZ HELP!!! 50 POINTS This is for chem 30 Describe how to prepare 750.0 mL of a standard 2.00 M sulfuric acid solution. Be sure to identify any special lab equipment required. Show all calculations.

What is the formula that this ionic compounds could form sr2+p3-o2-

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 type of fossil does this image depict?