Microbiology

Lab Report Determining the Molar Volume of a Gas Introduction: This science laboratory was designed so that we, the students, could list for how to determine the molar good deal of a foul up effectively. manner: The first step that we took to accomplish our goal was to flummox on our safety goggles and choose a lab transmit to work at. We received whizz 400ml beaker, one polyethylene pipette, 2 test tubes with hole rubber stoppers, two down in the mouth pieces of atomic number 12 (Mg), one thermometer and a phial of hydrochloric acid (HCl). We took the 400ml beaker and filled it around 2/3 abounding of water (H20) that was 18 OC. therefore we measured our pieces of Mg at 1.5 cm and determined that their voltaic pile was 1.36*10-2 g. We filled the pipet 2/3 full of HCl and poured it into one of the test tubes. Then, we cover the HCl with just enough water system so that no H2O would be dis fixed when the stopper was inserted. After inserting the stopper, we determined the Mg strip into the hole, inverted the test tube and placed it in the 400ml beaker.

HCl is heavier than H2O, so it floated from the tube, into the bottom of the beaker, reacting with the Mg along the centering to resurrect hydrogen gas (H2). We then measured the mountain of the H2, cleaned up our equipment and performed the experiment a second time. Results: The formula for trim the quite a little of the H2 to s.t.p. in trial 1: P1 V1 = P2 V2 766.0 mm Hg * 14.5ml = 760 mm Hg x T1 T2 291 K 273 K X = 13.71 ml The equation for finding the molar volume in trial 1 with conversion to Liters: Volume of H2 in STP 13.71 mlIf you want to get a full ! essay, inn it on our website: BestEssayCheap.com

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