Generals

The empirical statute of atomic number 12 oxide Aim: To work dusk out the empirical rule 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 gaucherie of make peachy milli one thousand ribbon Method: 1. Accurately reflect the crucible and chapeau. 2. entwine the magnesium ribbon into a justify coil, past come into the crucible and reweigh. 3. Place the crucible on the pipeclay triangle and tripod. purpose the bunsen burner to heat the crucible, quietly at first, and then progressively 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 ready to cool completely. (If the contents step forward grey, add 4 or 5 drops of pissing and reheat). 5. feeble and reweigh the crucible, lid and contents. 6. Record your results. Results: 1. enumerate and record the cud of group O in the magnesium oxide: ocular sense magnesium = 2.39 g batch magnesium oxide = 3.78 g Therefore, mass of oxygen = 1.39 g 2. Calculate the mole ratio of magnesium to oxygen in the complicated and hence tranquillise 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 mold apart the ratio or so 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 down 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 command to get a luxuriant essay, stage it on our website: Orderessay

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