Ionization is the process of removing an electron from an atom. For an atom, X , X, the first and second ionizations are described by the following equations. First ionization: X ( g ) ⟶ X + ( g ) + e − First ionization: X(g)⟶X+(g)+e− Second ionization: X + ( g ) ⟶ X 2 + ( g ) + e − Second ionization: X+(g)⟶X2+(g)+e− Consider the ionization of the period 2 2 elements. Which element has the highest second ionization energy? boron (B) oxygen (O) nitrogen (N) beryllium (Be) carbon (C) fluorine (F) lithium (Li) neon (Ne) Which element has the lowest second ionization energy? fluorine (F) beryllium (Be) nitrogen (N) neon (Ne) lithium (Li) carbon (C) oxygen (O) boron (B)

Agas occupies 475 cm^3 at 313k. find its volume at 367k. you must show all of your work to receive credit. be sure to identify which of the gas laws you will be using

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

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.