Which is the electron configuration for zinc? 1s22s22p63s23p64s23d8
1s22s22p63s23p64s13d10
1s22s22p53s23p64s23d10
1s22s22p63s23p64s23d10

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

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?