6) Identify which elements are oxidized and which elements are reduced. 16(H+) + 2TcO(4¯) + 3Sn(2+) ---> 2Tc(4+) + 3Sn(4+) + 8H2O ox: red:

Can someone me with these questions plz.

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

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?