Question: hi, i did this lab, from this website and I was wondering if anyone could come up with 3 sources of error, and they can't be human error. Thanks! You are saving me! Seeing as I am not allowed to post to the website :(, search on google liver lab with sand, and it is with a site called zerobio. Thanks!

I am in the same class and I am wondering the same thing...thanks!

Impurities in the sand

Old/contaminated equipment
Uncontrolled environment (impurities in the air)

Sorry for not posting those before, I suppose that would have been more helpful..Thank you!

Your answers look good. :-)

Since some of the measurements are vague, that could be an error. Also, what about the concentration of the hydrochloric acid?

To identify sources of error in a laboratory experiment, it's important to consider the specific procedure and variables involved. Unfortunately, without specific information about the lab and the experiment conducted, it's difficult for me to analyze the sources of error in your case. However, I can provide you with a general framework to help identify sources of error in a scientific experiment:

1. Instrumentation error: This refers to the limitations or inaccuracies of the equipment used in the experiment. For example, if the instrument used to measure the concentration of a chemical solution is not properly calibrated, it can introduce errors in the measured values.

2. Environmental factors: Various external factors can affect the outcome of an experiment. Temperature fluctuations, humidity, air pressure, and other similar factors can introduce errors. For instance, if the temperature of the lab room is not controlled, it can result in inconsistent measurements.

3. Methodology and experimental design: Potential errors can arise from the experimental procedure itself. Errors can occur if the steps are not followed precisely or if there are flaws in the experimental design. It's important to carefully consider the procedure to identify any possible sources of error.

Remember, these are just general categories of error sources. To accurately identify sources of error in your specific lab experiment, it's important to review the experimental procedure and think critically about the variables involved, the equipment used, and the potential impact of external factors.

What sources of error do you find?