Density of Carbon Dioxide Expanded Ethanol at (313.2, 328.2, and 343.2) K
Bibliographic record
Abstract
The density of ethanol saturated and expanded with carbon dioxide (CO 2 ) was determined at (313.2, 328.2, and 343.2) K and up to pressures close to the mixture critical point using a novel device, consisting of a high-pressure view cell equipped with a sinker attached to a spring balance and a microscopic optical measuring device. The density of CO 2 -expanded ethanol increased with pressure up to a maximum value at each temperature studied. A further increase in pressure caused a pronounced decrease in density until the mixture critical point was reached. The increase in density was temperature-dependent, with a less pronounced increase at higher temperatures. In the temperature and pressure range studied, the maximum increase in density of CO 2 -expanded ethanol was (6.3, 4.8, and 3.7) % at (313.2, 328.2, and 343.2) K, respectively. At all temperatures investigated the density of CO 2 -expanded ethanol exhibited the maximum value at pressures corresponding to a CO 2 density of about 190 kg·m −3, which translates into a reduced CO 2 density of 0.4. The experimental density data for CO 2 -expanded ethanol were correlated to pressure and temperature; furthermore, a new correlation for CO 2 -expanded ethanol density based on the reduced density of CO 2 and temperature was developed.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".