Start with these atoms... Draw the Lewis structure for the starting atoms
Add hydrogen atoms to
satisfy the octet rule
How many H’s are needed?
Draw the
structural
formula for the molecule
Write the molecular formula for the molecule
2 carbon atoms bonded together
1 carbon atom and 1 oxygen atom
1 carbon atom and 1 nitrogen atom
1 carbon atom and 2 oxygen atoms
© 2004 Key Curriculum Press.

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?

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.

Will mark brainliest how many electrons can be held in the energy level n = 4?