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General chemistry (sometimes referred to as "gen chem") is offered by colleges and universities as an introductory level chemistry course usually taken by students during their first year. [1] The course is usually run with a concurrent lab section that gives students an opportunity to experience a laboratory environment and carry out ...
Subscribers can download complete papers that were submitted by previous students and submit them as their own work. Additionally, the site allows students to upload homework and get completed work solutions from the site's contracted workers: an 'Essay mill' business. Users who upload content can use the site for free while others pay a fee.
A 2019 nationally representative survey of 95,505 freshmen at U.S. colleges, conducted by the UCLA Higher Education Research Institute, asked respondents, "During your last year in high school, how much time did you spend during a typical week studying/doing homework?" 1.9% of respondents said none, 7.4% said less than one hour, 19.5% said 1 ...
For example, sulfuric acid (H 2 SO 4) is a diprotic acid. Since only 0.5 mol of H 2 SO 4 are needed to neutralize 1 mol of OH −, the equivalence factor is: f eq (H 2 SO 4) = 0.5. If the concentration of a sulfuric acid solution is c(H 2 SO 4) = 1 mol/L, then its normality is 2 N. It can also be called a "2 normal" solution.
When one electron is removed from an sp 3 orbital, resonance is invoked between four valence bond structures, each of which has a single one-electron bond and three two-electron bonds. Triply degenerate T 2 and A 1 ionized states (CH 4 +) are produced from different linear combinations of these four structures. The difference in energy between ...
Lessons in Chemistry is a novel by Bonnie Garmus. Published by Doubleday in April 2022, it is Garmus's debut novel. It tells the story of Elizabeth Zott, who becomes a beloved cooking show host in 1960s Southern California after being fired as a chemist four years earlier. [4] It was adapted into an Apple TV+ miniseries that debuted on October ...
The ideal length for a video lesson is widely cited as eight to twelve minutes. [4] [5] Flipped classrooms also redefine in-class activities. In-class lessons accompanying flipped classroom may include activity learning or more traditional homework problems, among other practices, to engage students in the content.
The unit of r(T) can be converted to mol⋅L −1 ⋅s −1, after divided by (1000×N A), where N A is the Avogadro constant. For a reaction between A and B, the collision frequency calculated with the hard-sphere model with the unit number of collisions per m 3 per second is: