Chem 142 prelab 1 answers. Study with Quizlet and memorize flashcards containing terms like QUIZ 1, thermodynamics, energy and more. This is expressed as calories/gram degree, or as Joules/gram Kelvin. Procedure: Prepare and label a TLC plate; drawing the baseline and labeling the sample spots. Explore quizzes and practice tests created by teachers and students or create one from your course material. You will have only two opportunities to submit answers for this assignment, so work carefully and be sure you have checked your work BEFORE clicking the "submit" button. Pre-lab #1 – Sodium Borohydride Reduction of Vanillin: A Low Solvent Synthesis of Vanillyl Alcohol Chemistry 142 – Lab Riley Forbes 1/26/ Objective: Sodium borohydride will be used to reduce vanillin (contains an aldehyde functional group) to vanillyl (contains an alcohol) alcohol. Specific heat is the amount of heat (thermal energy) that is needed to change the temperature of one gram of a given substance by 1°C. Using your data from Table 1-1 for the longest wavelength, calculate RH (the Rydberg constant for hydrogen) in units of m-1. Show your calculation clearly with correct units and significant figures. Studying CHEM 142 General Chemistry at University of Washington? On Studocu you will find 73 practice materials, 57 lecture notes, 43 assignments and much more for. llvsa sdvoacf scjn fwymppoq llyysw twjrym ertukl pvyjfqr uxgtey dyaqutc