(just want to check my answer)

what fact is the most important indicator that the following reaction will take place?

ni(no3)2)aq) + k2s(aq) nis(s) + 2kno3(aq)

a) the reaction is a double displacement *my answer*
b) a precipitate is formed.
c) the reactants are ionic compounds.
d) the products are ionic compounds.

V1t2 = v2t1 is an expression of who’s law

What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.