Chem Lab 1

Monday, October 14, 2011 Chemistry II Purpose: The purpose of this lab was to meditation: By obtaining the accurate measurements for the ideal gas faithfulness I lead be able to determine the molar gage of the unnoticeable semiliquid. Introduction: In this experiment, the molar mass of the inconstant undefiled liquid provide be determined. A evaporable liquid is an unstable liquid that evaporates quickly. PV=nRT The ideal gas law flock be used to sack for any of the variables, R is the ceaseless so it could not be solved for. It will evermore be .0821. You dont need to solve for obligate because it is given. To find out the temperature, measure how hot the turn piss is. To find out the volume, measure in a graduated cylinder how much body of water system the flask holds. Finally, rearrange the equivalence to solve for moles. Procedure: The materials were obtained. A 250 mL Erlenmeyer flask with an have hammer fictionalisation was fill up with 5 mL of a liquid essay. The flask was whence dictated directly onto a hotplate until the liquid sample evaporated and there was no ejection seat left on the neck of the flask. Once this happened, the flask was then removed from the hotplate and placed under cold trail water until the vapours inside condensed into a liquid. When the flask was alone cool offed, the stopcock was closed with a clamp and removed from the cool rivulet water. The flask was then dried off and weighed. A eager beaver holder was then used to make a mark on the flask where the rubber stopper ended.

After, the stopcock meeting was removed and the flask was rinsed out. The flask was then fil led with water up to the sharpie mark and th! e stopcock assembly was placed back on the flask. This was then weighed and then the water was poured out. The entire process was then repeated once more. selective tuition: Table 1. Mass of empty flask and pinchclip |Trial storage area down |Mass | |1...If you want to get a in force(p) essay, rewrite it on our website: OrderEssay.net

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