Plz help...Use the balanced equation to calculate how many grams of H2 can be produced when 4 moles of H2O react. show work and
a correct answer.
Ca + 2H2O + Ca(OH)2 + H2

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?