Which chemical equation represents a physical change? 2CH3OH(l) + 3O2(g) --> 2CO2(s) + 4H2O(g)

2H2(g) + O2(g) --> 2H2O(g)

NaCl(aq) --> H2O(g) + NaCl(s)

2Li(s) + 2H2O(l) --> 2LiOH(s) + H2(g)

Five students had to answer the question how are elements arranged in a periodic tabledamon: i think the elements are arranged by increasing massflo: i think the elements are arranged according to their properties sienna: i think the elements are arranged by when their discovers kyle: i think the elements are arranged according to how common they areglenda: i don't agree with any of themwho is right

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)