My kids could solve that in high school. Are you seriously a graduate Engineer and unable to convert from mass to volume? Looking at your other posts makes me really curious--all of your questions are too simple to be homework, but far too lame to come from a working Engineer.
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
The plural of anecdote is not "data"