When you hold an object with a positive electric charge near an object with a negative electric charge, it causes the negatively charged object to move. How
could you model this interaction with magnets? Describe the types of forces
involved and the energy transformations that take place. (10 points)
Remember that both magnets and electric charges involve noncontact forces
and force fields. Magnets have north and south poles. Opposite poles attract
each other, and like poles repels each other. The same is true for positive and
negative electric charges: opposite charges attract, and like charges repel.

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 many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Answer explain why it is not possible to deduce a complete order of reactivity.