The guiding question of this ADI lab was, ¨What are the identities of the unknown compounds?” The goal of this lab was to use our knowledge of the relationship between moles and molar mass to discover the identities of the unknown compounds. Information that was given going into the lab was the names of the compounds that needed to be identified. Also given were plastic bags filled with unknown compound, labeled with the amount of moles in that given compound and each bag was labeled with a letter. Background information known going into the lab was that moles provide a standardized way of comparing elements. Mass can be used to determine the amount of moles in a sample if the molar mass of the sample is known.…show more content… To start off, the letters on each of the bags given were recorded as well as the amount of moles labeled on the same bags. A balance was then used to find the mass in grams of each compound in the bags given. Then a periodic table was used to identify the molar mass of each compound from the compound names given at the beginning of the lab. Using dimensional analysis and the conversion factor of one gram per mole is equal to one mole of the same substance, the mass of the unidentified compounds was divided by molar mass of the compounds given. This procedure converted grams into moles. Then the moles on the labeled bag of that compound was compared to the amount of moles found by dimensional analysis. Continuing to guess and check the molar mass put in until the moles on the bag and moles found from dimensional analysis were the same. This procedure was used because based on the background information if the moles labeled on the bag were the same as the amount found by using a balance and periodic table to measure the grams and convert it to moles then it is the same…show more content… By knowing the molar mass of a compound and the mass of a sample of the compound, the number of moles in the compound can be determined. This is done by dividing the actual mass by the molar mass of the compound and using the conversion factor, one mole is equivalent to the molar mass in grams of the same substance. Since the gram units will then cancel and leave moles as the final unit from there the moles on the bag and moles of the compound could be compared. If the moles on the bag are the same as the number of moles in the compound then they are essentially the same compounds. Overall, this claim was consistent with other groups’ claims that using dimensional analysis the identity of the compounds can be
