10. You analyze the gas in 100 kg of gas in a tank at atmospheric pressure, and find the
Following : CO2;19.3%, N2;72.1%, O2;6.5%, H2O;2.1%
What is the average molecular weight of the gas?
If you will show your work on this and the questions you've posted below and explain exactly what you don't understand I will be glad to critique what you have written and give you some helpful hints.
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To find the average molecular weight of the gas, you need to calculate the weighted average of the molecular weights of each component based on their respective percentages.
1. Convert the percentages to decimal form:
CO2: 19.3% = 0.193
N2: 72.1 % = 0.721
O2: 6.5% = 0.065
H2O: 2.1% = 0.021
2. Determine the molecular weights of each component:
CO2: 44 g/mol
N2: 28 g/mol
O2: 32 g/mol
H2O: 18 g/mol
3. Calculate the individual weighted molecular weights for each component:
CO2: (0.193)(44 g/mol) = 8.492 g/mol
N2: (0.721)(28 g/mol) = 20.188 g/mol
O2: (0.065)(32 g/mol) = 2.08 g/mol
H2O: (0.021)(18 g/mol) = 0.378 g/mol
4. Add the individual weighted molecular weights together:
8.492 g/mol + 20.188 g/mol + 2.08 g/mol + 0.378 g/mol = 31.138 g/mol
Therefore, the average molecular weight of the gas is approximately 31.138 g/mol.
Hmmm ... someone must be taking a test.
Not a single thought of his/her own ...