1 why do we write MG2+O2=MGOAS 2MG+O2 =MGO2ACTIVITY 1.3 PG 2WHY ZN DOES NOT HAVE VALENCY 2 IT IS WRITTEN AS ZN+H2SO4=ZNSO4+H23 PLEASE GIVE ME THE UNBALANCED OR THE SIMPLEST FORM FORRESPIRATION PROCESS4 WHAT IS H2 HYDROGEN OR HYDROXIDE IF HYDROGEN THEN WHY ITS VALENCY IS 2 IT IS SUPPOSE TO BE 1 SINCE IN EVERY EQUATION HYDROGEN IS WRITTEN AS H25 BALANCE PG 6 QUESTION 2( 3)CBSE READER6VALENCY OF OXIDE IS 3 BUT WHY IS IT WRITTEN AS 2 EVERYWHERE EXAMPLE PG 6 CAO +..................7 BALANCE WITH STEPS THE FOLL EQUATIONPB(NO3)2=PBO+2NO2+O28 BALANCE WITHSTEPS PG9 1ST EQUATION9IN DISPLACEMENT REACTION FE+CUSO4=FESO4+CUWHY THE VALENCY OF FE NOT 2 BUT 1 IS THIS BECAUSE OF SOME FERRIC FERROUS THING AND IF SO WHAT IS THE DIFFERENCE BETWEEN FERROUS AND FERRICAND WHY IS IT THAT IN THIS EQUATIONIF CU IN THE LHS HAVING VALENCY 2 AND IN THE RHS VALENCY 110 IRON NAIL IS WHAT FERRIC OR FERROUS?11 EXPLAIN EQUATION 1.32 PG 12 EQUATION CBSE READER12WHY THE VALENCY OF NITROGEN IS NOT 3 IN HYDROGEN +NITROGEN GIVES AMMONIA IT IS WRITTEN AS H2+N=NH3

Jessica James , 9 Years ago

Grade 10