find groups periods and the of elements using given electronic configuration 1s22s22p5 1s22s22p63s23p1 1s22s22p3 1s22s22p63s23p64s2 1s22s22p63s23p4 1s22s22p63s1

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

Particles vibrate in a rigid structure and do not move relative to their neighbors.

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world