A4.86-gram sample of calcium reacted completely with oxygen to form 6.80 grams of calcium oxide. this reaction is represented by the balanced equation below.
2ca(s) + o2(g) ==> 2cao(s)
54 determine the total mass of oxygen that reacted.

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

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

Identify the lewis acid in this balanced equation: ag+ + 2nh3 -> ag(nh3)2+a. ag+b. nh3c. ag(nh3)2+