Chlorine and Magnesium Lab Introduction

iLab, Week 3 ATOMIC WEIGHT OF MAGNESIUM science laboratory Introduction The purpose of this lab experiment is to determine the atomic lean of magnesium by measuring the amount of hydrogen drift evolved when hydrochloric venereal disease reacts with magnesium. The reaction is as followed Mg + 2HCL ? H2 + Mg2+(aq) + 2Cl-(aq) In this experiment there is a one to one relationship between the number of moles of hydrogen gas evolved and the moles of magnesium metal consumed in the reaction.Therefore in the finding of the experiment moles of H2 evolved is lucifer to the moles of Mg consumed, and atomic weight of Mg is equal to the weight of Mg consumed per moles of H2 evolved. Procedure 1st. Obtain a 600ml beaker, add 300ml of water 2nd. add 30ml of HCl (2M) to the beaker and reprimand 3rd. add 10mg of Magnesium metal to the beaker 4th. Allow hydrogen gas to evolve, each of the magnesium should be consumed. 6th. Record the amount of hydrogen gas evolved victimization the chemical pr operty dialog. Observations 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 Magnesium/moles of H2 Moles of H2 evolved = moles of Mg consumed Atomic weight of Mg= /0. 000411moles During my contemplation I noticed that when 10mg of magnesium metal was added to the beaker a shaded area appeared on the bottom of the beaker. When the bubbles stopped and the shaded area in the beaker disappeared it showed that the magnesium has been consumed. Discussion remnant Within a few sentences, provide a concluding account about the results of your laboratory