Which is best explanation of electric current in a wire? a) protons are pushed along by electric forces b) electrons build up in the wire and create a charge c) atoms move because of heat d) electrons flow because of electrical attraction and repulsion

Describe in detail the melting point behavior of the 80: 20 benzoic acid-mandelic acid mixture

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

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what