Which of the following reactions are redox reactions?
Check all that apply.
SO3(g)+H2O(l)→H2SO4(aq)
Mg(s)+Br2(l)→MgBr2(s)
4K(s)+O2(g)→2K2O(s)
Al(s)+3Ag+(aq)→Al3+(aq)+3Ag(s)
___NH3 + ___O2 —> ___NO2 + ___H2O
What mass of NO2 can be produced from 8.46 x 1022 molecules of oxygen? 23.7g of NH3 would be able to produce how many moles of H2O? How many grams of O2 are needed to produce 1.26 x 1028 molecules of H2O?