Solubility and Stability of Nesquehonite (MgCO<sub>3</sub>·3H<sub>2</sub>O) in Mixed NaCl + MgCl<sub>2</sub>, NH<sub>4</sub>Cl + MgCl<sub>2</sub>, LiCl, and LiCl + MgCl<sub>2</sub> Solutions
Bibliographic record
Abstract
The solubility and stability of nesquehonite (MgCO 3 ·3H 2 O) in mixed solutions (NaCl + MgCl 2, NH 4 Cl + MgCl 2, LiCl, and LiCl + MgCl 2 ) were measured by using a classic isothermal dissolution method over the temperature range of (298 to 308) K. The concentration investigated for all salts was up to 0.2 mol·dm −3 NaCl, 1.5 mol·dm −3 NH 4 Cl, 0.6 mol·dm −3 MgCl 2, and 1.5 mol·dm −3 LiCl at ambient temperature. The solubility of MgCO 3 ·3H 2 O phases in all the cases investigated was found to increase with the temperature increment. The comparison of solubility in MgCl 2 solutions and NaCl + MgCl 2, NH 4 Cl + MgCl 2, and LiCl + MgCl 2 mixed solutions has been investigated. XRD and SEM examination of the equilibrated solids showed that nesquehonite in all cases is stable in the temperature range of (298 to 308) K.
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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 | 0.005 | 0.003 |
| Meta-epidemiology (narrow) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.003 | 0.001 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.004 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.001 | 0.003 |
| 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; both teacher heads agree on what is shown here.
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".