In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed . Aluminium can also be recovered from cryolite (na3alf6) and. The purified dry ore, called alumina,. The usual aluminium ore is bauxite. Aluminium is a reactive metal, above carbon in the reactivity series. Study with quizlet and memorize flashcards containing terms like what is electrolysed in the extraction of aluminium metal?, what is the. Its main ore, is bauxite, which contains aluminium oxide. Bauxite contains aluminium oxide, water, iron oxide. Aluminium ore is called bauxite. Bauxite is essentially an impure aluminium oxide. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium. Aluminium is higher in the reactivity series than carbon,. The major impurities include iron oxides, silicon dioxide and titanium dioxide.
from www.toppr.com
Aluminium can also be recovered from cryolite (na3alf6) and. Aluminium is higher in the reactivity series than carbon,. Its main ore, is bauxite, which contains aluminium oxide. Bauxite contains aluminium oxide, water, iron oxide. The purified dry ore, called alumina,. The major impurities include iron oxides, silicon dioxide and titanium dioxide. Aluminium ore is called bauxite. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Aluminium is a reactive metal, above carbon in the reactivity series.
Aluminium is the abundant metal in the Earth's crust. Bauxite, the main
In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Its main ore, is bauxite, which contains aluminium oxide. Study with quizlet and memorize flashcards containing terms like what is electrolysed in the extraction of aluminium metal?, what is the. Aluminium is higher in the reactivity series than carbon,. Bauxite contains aluminium oxide, water, iron oxide. Aluminium ore is called bauxite. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Bauxite is essentially an impure aluminium oxide. The purified dry ore, called alumina,. The usual aluminium ore is bauxite. Its main ore, is bauxite, which contains aluminium oxide. Aluminium can also be recovered from cryolite (na3alf6) and. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Aluminium is a reactive metal, above carbon in the reactivity series. The major impurities include iron oxides, silicon dioxide and titanium dioxide.
From blog.thepipingmart.com
Extraction of Aluminium Step By Step Guide In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed The purified dry ore, called alumina,. The usual aluminium ore is bauxite. Bauxite contains aluminium oxide, water, iron oxide. The major impurities include iron oxides, silicon dioxide and titanium dioxide. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. The bauxite is purified close purifieda substance that has been separated. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.youtube.com
Extraction of Aluminium from Bauxite Bayer Process (Classroom Edition In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Bauxite is essentially an impure aluminium oxide. The major impurities include iron oxides, silicon dioxide and titanium dioxide. The purified dry ore, called alumina,. Aluminium is a reactive metal, above carbon in the reactivity series. Aluminium ore is called bauxite. The. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.tes.com
6.3 Extraction of Aluminium Teaching Resources In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. The purified dry ore, called alumina,. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium. The major impurities include iron oxides, silicon dioxide and titanium. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.w3schools.blog
Aluminium Extraction W3schools In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed The usual aluminium ore is bauxite. Bauxite contains aluminium oxide, water, iron oxide. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Aluminium ore is called bauxite. Aluminium can also be recovered from cryolite (na3alf6) and. Its main ore, is bauxite, which contains aluminium oxide. Study with quizlet and memorize. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From byjus.com
Explain extraction of Aluminium from bauxite in detail wth reactions In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium can also be recovered from cryolite (na3alf6) and. Bauxite is essentially an impure aluminium oxide. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Aluminium ore is called bauxite. Aluminium is a reactive metal, above carbon in the reactivity series. Study with quizlet and memorize flashcards containing terms like. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From mungfali.com
Electrolysis Of Bauxite In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Aluminium can also be recovered from cryolite (na3alf6) and. Study with quizlet and memorize flashcards containing terms like what is electrolysed in. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.youtube.com
Class 12 Chemistry Ch 4 Lecture 4 Extraction of Aluminium In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Aluminium ore is called bauxite. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Its main ore, is bauxite, which contains aluminium oxide. The purified dry ore, called alumina,. Aluminium is. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT Extraction of metals PowerPoint Presentation ID208800 In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed The usual aluminium ore is bauxite. Aluminium is a reactive metal, above carbon in the reactivity series. The major impurities include iron oxides, silicon dioxide and titanium dioxide. Study with quizlet and memorize flashcards containing terms like what is electrolysed in the extraction of aluminium metal?, what is the. Aluminium is higher in the reactivity series than carbon,. The purified. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT Electrolysis PowerPoint Presentation, free download ID8673833 In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium ore is called bauxite. Study with quizlet and memorize flashcards containing terms like what is electrolysed in the extraction of aluminium metal?, what is the. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium. Aluminium can also be recovered from cryolite (na3alf6) and.. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT Secondary 4 Chemistry Extraction of Aluminium via electrolysis JT In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Study with quizlet and memorize flashcards containing terms like what is electrolysed in the extraction of aluminium metal?, what is the. Bauxite contains aluminium oxide, water, iron oxide. Bauxite is essentially an impure aluminium oxide. The usual aluminium ore is bauxite. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified.. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From byjus.com
Explain extraction of Aluminium from bauxite in detail wth reactions In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium is higher in the reactivity series than carbon,. Aluminium is a reactive metal, above carbon in the reactivity series. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Bauxite is essentially an impure aluminium oxide. Bauxite contains aluminium oxide, water, iron oxide. Study with quizlet and memorize flashcards containing. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.youtube.com
Metallurgy Class 10 Extraction Of Aluminium from Bauxite In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium can also be recovered from cryolite (na3alf6) and. Aluminium is a reactive metal, above carbon in the reactivity series. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Aluminium is higher in the reactivity series than carbon,. Bauxite is essentially an impure aluminium oxide. Bauxite ore (al2o3.xh2o) is the. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From pdfprof.com
extraction de l'alumine de la bauxite In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Bauxite contains aluminium oxide, water, iron oxide. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium. Aluminium can also be recovered from cryolite (na3alf6) and. Aluminium is a reactive metal, above carbon in the reactivity series. The bauxite is purified close purifieda substance that. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.scribd.com
Extraction of Aluminium From Its Bauxite) PDF In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Its main ore, is bauxite, which contains aluminium oxide. Aluminium ore is called bauxite. Aluminium is a reactive metal, above carbon in the reactivity series. The purified dry ore, called alumina,. Aluminium can also be recovered from cryolite (na3alf6) and. Aluminium is higher in the reactivity series than carbon,. Study with quizlet and memorize flashcards containing terms like what is. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT Extracting Metals by Electrolysis PowerPoint Presentation, free In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium ore is called bauxite. The major impurities include iron oxides, silicon dioxide and titanium dioxide. Aluminium can also be recovered from cryolite (na3alf6) and. Bauxite is essentially an impure aluminium oxide. Bauxite contains aluminium oxide, water, iron oxide. The usual aluminium ore is bauxite. Aluminium is higher in the reactivity series than carbon,. Aluminium is a reactive metal, above. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT Options(electrochemistry) PowerPoint Presentation, free download In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium is higher in the reactivity series than carbon,. Aluminium is a reactive metal, above carbon in the reactivity series. The purified dry ore, called alumina,. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Aluminium ore is called bauxite. Bauxite is essentially an impure aluminium oxide. The bauxite is. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT EXTRACTION OF METALS PowerPoint Presentation, free download ID In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Its main ore, is bauxite, which contains aluminium oxide. The major impurities include iron oxides, silicon dioxide and titanium dioxide. Aluminium is a reactive metal, above carbon in the reactivity series. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. The purified dry ore, called alumina,. Aluminium is higher in. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.youtube.com
Extraction of Aluminium from Bauxite YouTube In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. The major impurities include iron oxides, silicon dioxide and titanium dioxide. Bauxite is essentially an impure aluminium oxide. Aluminium ore is called bauxite. Aluminium can also be recovered from cryolite (na3alf6) and. The purified dry ore, called alumina,. Study with quizlet. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.onlinemathlearning.com
Extraction of Aluminium (examples, answers, activities, experiment, videos) In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Aluminium ore is called bauxite. The usual aluminium ore is bauxite. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Study with quizlet and memorize flashcards containing terms like you get. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT Secondary 4 Chemistry Extraction of Aluminium via electrolysis JT In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed The major impurities include iron oxides, silicon dioxide and titanium dioxide. Aluminium ore is called bauxite. Bauxite contains aluminium oxide, water, iron oxide. The usual aluminium ore is bauxite. Aluminium is a reactive metal, above carbon in the reactivity series. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.tes.com
ALUMINIUM EXTRACTION SHOWS BASIC IDEA BEHIND EXTRACTION Teaching In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium. Aluminium ore is called bauxite. Study with quizlet and memorize flashcards containing terms like what is electrolysed in the extraction of aluminium metal?, what is the. Its main ore, is bauxite, which contains aluminium oxide.. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.youtube.com
IGCSE Chemistry Revision 24 Extraction of Aluminium YouTube In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed The purified dry ore, called alumina,. Aluminium can also be recovered from cryolite (na3alf6) and. The major impurities include iron oxides, silicon dioxide and titanium dioxide. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Aluminium ore is called bauxite. Bauxite is essentially an impure aluminium oxide. Aluminium is higher. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From studylib.net
extracting aluminium In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium can also be recovered from cryolite (na3alf6) and. Bauxite contains aluminium oxide, water, iron oxide. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium.. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT Aluminium PowerPoint Presentation, free download ID580838 In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium is higher in the reactivity series than carbon,. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium. The major impurities include iron oxides, silicon. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From kunduz.com
[ANSWERED] EXTRACTION OF ALUMINIUM 123 Bauxite ore c... Physical In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Bauxite contains aluminium oxide, water, iron oxide. Study with quizlet and memorize flashcards containing terms like what is electrolysed in the extraction of aluminium metal?, what is the. Bauxite is essentially an impure aluminium oxide. The usual aluminium ore is bauxite. Aluminium can also be recovered from cryolite (na3alf6) and. Aluminium ore is called bauxite. The major impurities include iron. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.researchgate.net
Composition of bauxite residue metallurgical view (data from DMR3610 In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium is a reactive metal, above carbon in the reactivity series. Study with quizlet and memorize flashcards containing terms like what is electrolysed in the extraction of aluminium metal?, what is the. The usual aluminium ore is bauxite. Its main ore, is bauxite, which contains aluminium oxide. The bauxite is purified close purifieda substance that has been separated from other. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.everand.com
Aluminium Extraction Stepbystep How It Works Everand In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium. Aluminium can also be recovered from cryolite (na3alf6) and. The usual aluminium ore is bauxite. Bauxite is essentially an impure aluminium oxide. Aluminium is a reactive metal, above carbon in the reactivity series. Its main. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT Extraction of Aluminium PowerPoint Presentation, free download In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Bauxite is essentially an impure aluminium oxide. Aluminium ore is called bauxite. The purified dry ore, called alumina,. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Bauxite contains aluminium oxide, water, iron oxide. The bauxite is purified close purifieda substance that has been separated from other substances is said. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT ALUMINIUM PowerPoint Presentation ID5529348 In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium can also be recovered from cryolite (na3alf6) and. Aluminium is higher in the reactivity series than carbon,. Aluminium is a reactive metal, above carbon in the reactivity series. Bauxite contains aluminium oxide, water, iron oxide. Its main ore, is bauxite, which contains aluminium oxide. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.toppr.com
Aluminium is the abundant metal in the Earth's crust. Bauxite, the main In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Aluminium can also be recovered from cryolite (na3alf6) and. Aluminium ore is called bauxite. Aluminium is a reactive metal, above carbon in the reactivity series. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.slideserve.com
PPT Changing Materials PowerPoint Presentation, free download ID465933 In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Bauxite contains aluminium oxide, water, iron oxide. Study with quizlet and memorize flashcards containing terms like you get aluminium from what?, how must aluminium be extracted and why?, the electrolysis of aluminium. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Study with quizlet and memorize flashcards containing terms like. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.youtube.com
Extraction of Aluminium from Bauxite ICSE Class 10 Bayer’s Hall In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium ore is called bauxite. The purified dry ore, called alumina,. Aluminium is a reactive metal, above carbon in the reactivity series. Bauxite ore (al2o3.xh2o) is the major source of aluminium till date which is a mixture of hydrated aluminium oxide. Aluminium can also be recovered from cryolite (na3alf6) and. Its main ore, is bauxite, which contains aluminium oxide. Bauxite. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From app.pandai.org
Extraction of Metals from its Ore In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Its main ore, is bauxite, which contains aluminium oxide. The bauxite is purified close purifieda substance that has been separated from other substances is said to be purified. Bauxite is essentially an impure aluminium oxide. Bauxite contains aluminium oxide, water, iron oxide. Aluminium ore is called bauxite. Aluminium is higher in the reactivity series than carbon,. Study with quizlet and. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.researchgate.net
2 Extraction route of aluminium from the initial bauxite step to the In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed Aluminium can also be recovered from cryolite (na3alf6) and. Study with quizlet and memorize flashcards containing terms like what is electrolysed in the extraction of aluminium metal?, what is the. Aluminium ore is called bauxite. Aluminium is a reactive metal, above carbon in the reactivity series. Aluminium is higher in the reactivity series than carbon,. Bauxite is essentially an impure. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.
From www.savemyexams.co.uk
Extraction of Aluminium from Bauxite (9.3.3) CIE IGCSE Chemistry In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed The major impurities include iron oxides, silicon dioxide and titanium dioxide. Aluminium is higher in the reactivity series than carbon,. Study with quizlet and memorize flashcards containing terms like what is electrolysed in the extraction of aluminium metal?, what is the. Bauxite is essentially an impure aluminium oxide. Its main ore, is bauxite, which contains aluminium oxide. The purified dry. In The Extraction Of Aluminium From Bauxite What Is The Composition Of The Mixture Electrolysed.