CHEM 121 Study Guide - Midterm Guide: Principal Quantum Number, Alkali Metal, Table Of The Elements

• School: UBC
• Department: Chemistry
• Course: CHEM 121
• Professor: All

Document Summary

Total marks: h2s was reacted with oxygen according to the following unbalanced reaction: Indicate which of the two reagents is limiting: calculate the amount of excess reagent remaining at completion, the yield of so2 for this reaction is 86. 4%. Midterm 1: a 58. 3 mg sample of a compound, which contains only carbon, hydrogen and oxygen, is burned completely in oxygen. The products of combustion are 105 mg of co2 and 36. 0 mg of h2o. The molecular mass as determined by mass spectrometry is 146. 1 g mol-1. 3a) calculate the wavelength of light required to remove an electron from a ground state hydrogen atom. B) how would this compare to the wavelength required to remove an electron from a ground state helium atom: sketch all of the orbitals with a principal quantum number of equal to 2. Midterm 1: phosgene, a poisonous gas used during the ww1, is composed of 12. 1 % c, N2o4___________________: give the molecular formula for the following;