What is the limiting reactant if there is 100 moles of CH4 reacting with 5 moles of O2 in a combustion reaction to form CO2 and H2O

It decreases by 4 is your answer mark brainliest 

It starts to rust i think

In order to improve results, many different steps can be taken into account. 1) using more precise scales and thermometers is always something that should be considered as being precise means that you are more exact with your answer.2) increasing the sample size should also be considered, if you have a bigger sample size you are able to determine if your results are accurate as well as if there are any variables that should be taken into account plus it assists in the statistical analysis and produces overall better data3) using better handwriting is also a plus, along with organizing the data properly so that others are also able to read the results and even redo the experiment in the future if it is needed.