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2,2,3,3,4,4,4-Heptafluorobutyl Acetate—Chemical Equilibrium and Kinetics of the Esterification Reaction of 2,2,3,3,4,4,4-Heptafluorobutan-1-ol and Acetic Acid in the Presence of an Acidic Catalyst [PDF]

open access: yesMolecules
The kinetics and chemical equilibrium of the esterification reaction of acetic acid (AAc) and 2,2,3,3,4,4,4-heptafluorobutan-1-ol (HFBol) (using sulfuric acid as a catalyst) are determined experimentally.
Andrei V. Polkovnichenko   +5 more
doaj   +2 more sources

High School Students’ Mental Models on Chemical Equilibrium

open access: greenJurnal Pendidikan Sains, 2019
: Chemical equilibrium knowledge has many abstract concepts that often lead to alternative conceptions and misconceptions. One way that can be used to find out students’ conceptions is to identify their mental models.The purpose of this study was to ...
Hilya Ulinnaja   +2 more
doaj   +2 more sources

STUDENTS’ CHEMICAL LITERACY PROFILE ON CHEMICAL EQUILIBRIUM MATERIAL: A CASE OF CORAL REEFS TOPIC

open access: goldJurnal Eduscience
Nowadays, chemical literacy is something important to discuss, including the benefits of chemical literacy itself. It can be the main purpose for teachers, experts, and curriculum policymakers.
Faiz Ilham Pratama   +2 more
doaj   +3 more sources

Topic-Specific Pedagogical Content Knowledge-Based Instruction and Level of Conceptual Understanding of Chemical Kinetics and Equilibrium concepts on Grade 11 Students

open access: yesScience Education International, 2023
The goal of this study was to assess students’ level of conceptual understanding of chemical kinetics and equilibrium using topic-specific pedagogical content knowledge (TSPCK)-based instruction in chemistry grade 11 students.
Kassahun Dejene , Woldie Belachew
doaj   +1 more source

Calculation of complex chemical equilibrium compositions of composite rocket propellants combustion products [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
An adequate method for calculating chemical equilibrium in a predominantly gaseous, multi-component reactive mixture was investigated and successfully applied.
Filipović Miloš, Kilibarda Nikola
doaj   +3 more sources

Ion-Induced Synthesis of Alginate Fibroid Hydrogel for Heavy Metal Ions Removal

open access: yesFrontiers in Chemistry, 2020
Design and synthesis of environmentally friendly adsorbents with high adsorption capacities are urgently needed to control pollution of water resources. In this work, a calcium ion-induced approach was used to synthesize sodium alginate fibroid hydrogel (
Chuncai Kong   +5 more
doaj   +1 more source

Development of Triple Representation Based on Virtual Laboratory Media on the Chemical Equilibrium Experiment in Online Learning Era

open access: yesJournal of Educational Chemistry, 2021
The purpose of this research is to produce virtual laboratory media to support laboratory-based learning with the features mentioned above to make students become scientists with comprehensive understanding competencies and laboratory engineering skills.
Deni Ainur Rokhim, Maya Oki Septiani
doaj   +1 more source

Analysis of the chemical equilibrium of combustion at constant volume [PDF]

open access: yesINCAS Bulletin, 2014
Determining the composition of a mixture of combustion gases at a given temperature is based on chemical equilibrium, when the equilibrium constants are calculated on the assumption of constant pressure and temperature.
Marius BREBENEL
doaj   +1 more source

The calculation of theoretical energetic performances of composite rocket propellants [PDF]

open access: yesJournal of the Serbian Chemical Society, 2001
A suitable method for calculating theoretical energetic performances of a composite propellant was investigated and successfully verified. This method is based on generally accepted hypotheses, consistent and simple calculation of the chemical ...
Filipović Miloš, Kilibarda Nikola
doaj   +3 more sources

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