The grams to moles free chemistry app teaches students new to chemistry how to convert grams of a compound to moles of a compound, moles of a compound from grams of a compound, and calculate the Molar Mass of a compound from the chemical formula of the compound. There is an element symbol look-up table, an element list by atomic number and a scrolling/zooming periodic table with element information in a convenient pop-up. The conversion calculations are based on the unit factor method of unit conversions which is helpful more generally. grams to moles free will also be useful for experienced chemists as a chemistry calculator and periodic table reference tool. This free version contains an iAd banner. A paid version of this app, grams to moles, which does not have an ad banner can be purchased separately.