Molarity and Molality
(M) Molarity- number of mols of a solute dissolved in one liter solution
(m) Molality- number of mols of a solute dissolved in one kilogram solvent
One Molal Solution- one mol solute dissolved in one kilogram solvent
also the lab will be collected on Monday
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This is a good site on molality.
ReplyDeletehttp://www.cartage.org.lb/en/themes/sciences/chemistry/generalchemistry/solutions/solubility/Solutionsindex/Molality/Molality.htm
remember to include calculations in your lab
ReplyDeletealso remember to write a good concluding paragraph about you calculated R value
ReplyDeleteHere's a site with a molality calculator
ReplyDeletehttp://www.rsimons.org/ahs/molality.htm
remember to show all calculations and write a paragraph summary about why your R value was different from everyone else's
ReplyDeletehere's a site with problems on molarity and molality
ReplyDeletehttp://learning.mgccc.cc.ms.us/science/chemistry/molarity.html
http://chemistry.about.com/od/lecturenotesl3/a/concentration.htm
ReplyDeletegood site on molality and molarity
http://environmentalchemistry.com/yogi/chemistry/MolarityMolalityNormality.html
ReplyDeleteexplains differences in molarity and molality.. good little site if you're bored
Make sure that your calculations have correct sig figs.
ReplyDeleteRemember Big M for Molarity and little m for molality
ReplyDelete