Write ionic equations for the following: 1. HNO3(aq) + NaOH(aq) → NaNO3(aq) + H2O(l)
2. HCl(aq) + KOH(aq) → KCl(aq) + H2O(l)
3. H2SO4(aq) + Mg(OH)2(aq) →MgSO4(aq) + 2H2O(l)

Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?