Answer:
The student measured the time it took for two reactions to be completed: one reaction was completed in 39 seconds, while the other reaction was completed in 50 seconds.
To conclude about the rates of these reactions, we can compare the times it took for each reaction to be completed.
In this case, the reaction that took 39 seconds to complete can be considered to have a faster rate compared to the reaction that took 50 seconds.
The rate of a reaction refers to how quickly reactants are being converted into products. In this context, it means that the reaction that took 39 seconds had a higher rate of conversion compared to the reaction that took 50 seconds.
To better understand this, let's consider an example:
Imagine you have two cars traveling the same distance. If one car completes the distance in 39 minutes and the other car completes it in 50 minutes, we can conclude that the car that took 39 minutes had a faster speed. Similarly, in the context of reactions, the reaction that took 39 seconds had a faster rate of conversion.
Therefore, based on the times provided, the student can conclude that the reaction completed in 39 seconds had a faster rate compared to the reaction completed in 50 seconds.