A 2 kg ball is thrown into the air with a velocity of 10 m/s2. What is the kinetic energy of the ball? a:60
b:90
C:50
D:100

As you move from right to left on the periodic table the atomic radius fill in the blank

How many moles of gas are present if p=11 atm, v=12l, t=185k?

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.