Generals

The empirical figure of milli gee oxide Aim: To work dip out the empirical legislation of atomic number 12 oxide. Apparatus: 1 x Electronic balance 1 x Bunsen burner 1 x Crucible with palpebra 1 x Heatproof mat 1 x porcelain clay trilateral 1 x Tripod Box of matches Metal tongs 10cm strip of make peachy atomic number 12 ribbon Method: 1. Accurately urge the melting pot and hat. 2. entwine the magnesium ribbon into a capable coil, past come into the crucible and reweigh. 3. Place the crucible on the pipeclay triangle and tripod. consumption the bunsen burner to heat the crucible, light at first, and then increasingly more strongly, with the lid c overing about three-quarters over the crucible top. 4. Continue heating for 5 minutes with the lid off. When the magnesium has burned, allow the crucible and countersink to cool completely. (If the contents wait grey, add 4 or 5 drops of pissing and reheat). 5. go undertle down and reweigh the crucible, lid and contents. 6. Record your results. Results: 1. report and record the cud of type O in the magnesium oxide: optic sense magnesium = 2.39 g jackpot magnesium oxide = 3.78 g Therefore, mass of type O = 1.39 g 2. Calculate the mole prop of magnesium to oxygen in the deepen and hence correct the empirical formula of the compound: Number of moles per Mg = 2.39/24 = 0.0995 Number moles O = 1.39/16 = 0.0868 Divide by the smallest to set apart the ratio round 1 Mg: 1 O Questions: 1.

Mass of magnesium oxide = 0.251g Mg: O 0.16: O.091 (Ar) 24.3 16 0.0066: 0.0057 0.0057 0.0057 ~ 1:1 MgO 2. 2mg(s) + O2(g) 2mgo (s) 3. Sources of error in our essay that may fuddle affected our empirical formula calculations embarrass: * When we weighed our crucible and lid with the magnesium inside, it seemed to weigh a square 0.1 of a gram heavier than most students. This could have been that we did non clean it with the cloth provided. 4....If you extremity to get a bounteous essay, stage it on our website: Orderessay

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