When a 85 g sample of an alloy at 100.0 oC is dropped into 90.0 g of water at 25.2 oC, the final temperature is 33.7 oC. What is the specific heat of the alloy? (The specific heat of water is 4.184 J/(goC).)

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.

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these

In a ball-and-stick molecular model, what do the sticks represent?