Given the following equation formats, which form matches a single replacement reaction?
O AB + CD → AD + CB
O A+B → AB
O A + BC → AC + B
O AB → A+B

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage

Calculate the number of moles of ethane in 100 grams

The rate constant for the reaction below is 6.2 x 10−5 mol l−1 s −1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?