Consider these electron transitions in a hydrogen atom: I. n = 2n=1
II. n = 3-n=1
III. n= 1 ->n= 4
Which of the electron transitions would release the most energy?
A)
B) II
C) III
D) I, II, and Ill release the same amount of
energy

How are elements arranged in a periodic table

Agas is contained in a thick walled balloon when the pressure changes from 1.21 atm to 2.52 the volume changes from 3.75 l to 1.72 l and the temperature change from 293k to blank k

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams