I NEED HELP NOW Ted and Emily played a mixed doubles tennis match against Jack and Brenda. In the second match, Ted and Brenda played against Jack and Emily. Which type of chemical reaction does the situation demonstrate?

Synthesis reaction
Single replacement
Double replacement
Decomposition reaction

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.