4nh3(9)+302(g) → 2n2(g) + 6h2o(g)
what is the enthalpy of the reaction?

An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?