BONUS Pine Sol, an eco-friendly student, earns an 80.2 first quarter, 60.0 second quarter in their favorite Chem class, and a 74.3 on the midterm exam, what is Pine's overall AWAM i.e. grade?
BONUS Pine Sol, an eco-friendly student, earns an 80.2 first quarter, 60.0 second quarter in their favorite Chem class, and a 74.3 on the midterm exam, what is Pine's overall AWAM i.e. grade?
For unlimited access to Homework Help, a Homework+ subscription is required.
Related textbook solutions
Basic Chemistry
Principles of Chemistry Molecular Approach
Principles of Chemistry Molecular Approach
Chemistry: Structure and Properties
Chemistry: A Molecular Approach
Chemistry: A Molecular Approach
Principles of Chemistry: A Molecular Approach
Chemistry: The Central Science
Related questions
1. The student from class has an exam to study for and asks you to analyze her data. Ethical problems aside, here are the data (the area of each peak â you should assume injection volume is always the same):
Sample # | Peak 1 | Peak 2 | Peak 3 | Peak 4 | Peak 5 |
S1 | 0.37 | 5.62 | 3.98 | 4.72 | 11.32 |
S2 | 0.34 | 2.78 | 1.92 | 3.78 | 17.16 |
S3 | 0.35 | 6.92 | 13.02 | 1.92 | 3.78 |
S4 | 0.35 | 1.74 | 10.72 | 8.82 | 4.36 |
A. Why are there 5 peak areas given for each sample, when the mixture contains only four alcohols?
B. You know that the column in the labâs GC is packed with the nonpolar material PDMS. What is the most likely elution order for these alcohols (ethanol, 1-propanol, 1-butanol, 1-pentanol)?
C. Calculate the percentage of each peakâs area to the total area. Depending on the type of detector, this can be a pretty good approximation to the actual percent composition by mass of the mixture.
2. In normal-phase HPLC, one might use an alumina column (Al2O3) as the stationary phase, with a mixture of acetone and hexane as the mobile phase. For a gradient elution (i.e., weak mobile phase to strong), would you increase or decrease the amount of acetone in the mobile phase?