volume and mass
This is not a question that I can answer, or help you solve.
It is clearer if you phrase your post in terms of a specific question.
I searched Google under the key words "volume mass" to get these possible sources:
http://www.nyu.edu/pages/mathmol/modules/water/density_intro.html
http://www.newton.dep.anl.gov/askasci/gen01/gen01652.htm
http://msnucleus.org/membership/html/k-6/as/scimath/3/assm3_6a.html
http://www.usoe.k12.ut.us/curr/science/sciber00/7th/matter/sciber/2.htm
I hope this helps. If not, repoost with specific questions. Thanks for asking.