In chemistry we are doing a lab that involves crucibles and Mg ribbon, we have three days to complete the lab.
Anyways do you think it would be alright to substitute the mass of the crucible we had the first day with the mass of the crucible we had today? We know how much the Mg ribbon weighed so it shouldn't effect the rest of the data, my partner said that we should just use the one mass of the crucible for the first part of the lab and the mass of the second crucible for the other part of the lab-makes no sense to me.
I won't be much help. It may make a difference but it all depends upon what the instructor will be checking and how much work you completed the first day vs the next two days. If you heated the Mg ribbon and crucible the first day but continued heating the second day it will make a difference if you substitute different masses for the crucible and what your partner thinks probably is the way to go. If however, you know the mass of the Mg AND THE MASS of the oxide, it makes little difference what you do for those are the two masses that are important.
thanks, I'll ask my teacher just to make sure. :)
In your chemistry lab, it is important to ensure accurate and reliable data collection. It is generally not recommended to substitute the mass of the crucible from one day to another. Let me explain why.
When conducting experiments, it is crucial to control all variables as much as possible. In this case, the mass of the crucible is a variable that could potentially affect your results. The mass of the crucible can vary due to factors such as temperature, humidity, or even slight variations in the manufacturing process.
To maintain consistency in your lab data, it is best to use the same crucible throughout the entire experiment. This means using the mass of the same crucible for both parts of the lab. By doing so, you can minimize the potential error caused by any variations in the mass of the crucible.
If you were to use different crucibles for each part of the lab, it could introduce inconsistencies and compromise the accuracy of your measurements. The slight difference in mass between crucibles may seem insignificant, but it can still affect your final results.
To ensure accurate data, it is important to be diligent in recording and using the correct measurements for each experimental component. This includes using the appropriate mass of the crucible for each part of the lab. By doing so, you will be able to generate more reliable and consistent data for your experiment.