Use Hess's Law to calculate the energy change for the reaction that produces SO3. 2S(s) +20, (g) → 280, (g) 280, (g) +0, (g) → 280, (g)
AH = -594kJ AH =-198kJ

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.