attach to your lab report. Recopy if messy) ss of empty stoppered flask 151 Mass
ID: 1020913 • Letter: A
Question
attach to your lab report. Recopy if messy) ss of empty stoppered flask 151 Mass of flask, stopper and CO2 Stoppered flask volume Temperature Atmospheric pressure Analysis: (From Step 5) -- 23.5 115 AMH The mass of CO2 obtained by subtraction of the two masses is incorrect. That is because we said the flask was empty at the start of the lab, but it really had air in it, which was pushed out by the subliming CO2. When we weigh solids or liquids, the mass of displaced air is negligible, but when we displace air with another gas, the mass of the air isn't negligible. So we need to calculate the mass of the air that is displaced and include that in the calculation of CO2 mass. Show all calculations 1. Determine the mass of air in the flask by multiplying the flask volume by 0.0011 g/mL (the density of air at room temperature) 0:3125 0,311765 Mass of air in flask Calculation 2. Subtract the mass of air from the mass of the empty stoppered flask to get the mass of flask and stopper without air. 29- 156 103 156-1039 Mass of flask and stopper without air Calculation: 3. Subtract the mass of flask and stopper without air from the mass of flask, stopper and CO2 to get the mass of CO2. 0443 04431 -56-103% Mass of CO25b Calculation Massoft514 Mass ofCO2-15Triftel56-103% lited by Nick Buker 02/10/10 Edited by Anna Spaulding 3/24/1:sExplanation / Answer
i checked all the calculations. they are correct.
Error analysis
reasons for that sort of error can be,
Not having a costant temperature, pressure through out the experiment
errors in the analytical balance.
the method that you ask to prepare CO2 is not given in this. some errors can be dur to the procedure.
Post lab questions
1. procedure is not given so cannot answer for this
4. frost occur by water vapour in air by absorbing heat from the flask and become condense. if it is not wiped temperature of the mixture can be changed because water vapour absorbs heat.
2. it is universally accepted to use kelvin temperatures in the gass lawas, because it is more linearly than celcius
3. your view should be given in this question
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