Chlorine and Magnesium Lab Introduction

iLab, week 3 ATOMIC WEIGHT OF MAGNESIUM LAB Introduction The theatrical role of this lab experiment is to determine the nuclear weight of magnesium by measuring the amount of hydrogen gas evolved when hydrochloric acid reacts with magnesium. The reaction is as followed Mg + 2HCL ? H2 + Mg2+(aq) + 2Cl-(aq) In this experiment there is a peerless to one relationship between the number of moles of hydrogen gas evolved and the moles of magnesium admixture consumed in the reaction.Therefore in the finding of the experiment moles of H2 evolved is equal to the moles of Mg consumed, and nuclear weight of Mg is equal to the weight of Mg consumed per moles of H2 evolved. Procedure 1st. ascertain a 600ml beaker, add 300ml of water 2nd. add 30ml of HCl (2M) to the beaker and stir 3rd. add 10mg of milligram metal to the beaker 4th. Allow hydrogen gas to evolve, all of the magnesium should be consumed. 6th. Record the amount of hydrogen gas evolved using the chemical lieu dialog. Observatio ns and Results Moles of hydrogen evolved 0. 000829g (8. 29 x 10-4)/ 0. 000411 moles, (4. 1 x 10-4) Calculated atomic weight of magnesium ______________ Atomic weight of Mg = weight of atomic number 12/moles of H2 Moles of H2 evolved = moles of Mg consumed Atomic weight of Mg= /0. 000411moles During my observation I discover that when 10mg of magnesium metal was added to the beaker a shaded area appeared on the bottom of the beaker. When the bubbles halt and the shaded area in the beaker disappeared it showed that the magnesium has been consumed. Discussion Conclusion < Within a few sentences, provide a concluding statement about the results of your science laboratory>