3. The scientist who conducted the asthma experiment came up with a better method of determining whether air pollution was the main factor that caused asthma. He could
produce the fumes that contributed to smog and pump them into one of the rural schools
every day for one year to see if more children developed asthma. Would this be an ethical
experiment? Why or why not? (2 points)

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

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 does a large body of water, such as the ocean, influence climate?