The Periodic Table is arranged according to? the number of electrons that each element has.
the boiling point of the elements.
the reactivity of the elements.
the number of protons each element has.

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

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

Name the intersection of plane bpq and plane cpq.