CHM110H5 Lecture Notes - Lecture 1: Emery Cloth, Burette, Molar Mass
Document Summary
Part a: determinaion of the atomic mass of a metallic element. The atomic mass of a metal can be determined by two methods based on the reacion of the metal with aqueous acid: M(s) + nh3o+ m+n + n/2h2 + nh2o. These two methods are: (1) determining the number of moles of h2 gas produced by a known weight of metal, (2) determining the number of moles of h3o+ that are consumed by a known weight of metal. The purpose of this lab is to determine the atomic mass of an unknown metal by determining the number of moles of h2 gas produced by a known weight of metal. 350ml of disilled water and 150ml of 1m hcl soluion were mixed in an 800ml beaker and illed into a gas burete. The burete was then inverted in the soluion remaining in the beaker.
