The reaction below shows how the potential energy changes during a chemical reaction. What does the red arrow show?
Potential Energy
Reaction Progress
A. The change in enthalpy is negative, and the reaction is exothermic.
hegativ
B. The activation energy is positive, and the reaction is exothermic.
C. The activation energy is negative, and the reaction is endothermic.
D. The change in enthalpy is positive, and the reaction is
endothermic

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

What is the molar mass of ca(cio4)2

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)