A student drops three blocks from the same height and measures the time it takes for the blocks to hit the ground. Each block has a different mass. What is the dependent variable in the experiment?

the drop height

the volume of the blocks

the mass of the blocks

the time for the blocks to hit the ground

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: