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Leni Widiarti, M.Si.
State Islamic University of North Sumatera's Lecturer, Medan - Indonesia
All about Chemistry : IGCSE, O Level, AS/A Level, University, Laboratory, Indonesia

More info : leniwidiarti@uinsu.ac.id

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56:19

REAKSI REDOKS

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Shared 10 months ago

196 views

33:05

HIDROKARBON - TATA NAMA SENYAWA KARBON

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Shared 11 months ago

193 views

35:08

ASAM AMINO DAN PROTEIN

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Shared 1 year ago

600 views

35:44

TERMOKIMIA

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Shared 1 year ago

209 views

27:45

SIFAT KOLIGATIF LARUTAN

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Shared 1 year ago

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29:11

TATA NAMA ALKANA, ALKENA, ALKUNA

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298 views

1:08:20

Tata Nama Senyawa Kimia - in Bahasa

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Shared 2 years ago

797 views

22:51

Asam dan Basa - in Bahasa

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1.3K views

27:13

Konsep Mol - in Bahasa

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Shared 2 years ago

665 views

5:15

Glassware in the Laboratory

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Shared 3 years ago

1.8K views

8:06

Paper Chromatography - Experiment

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Shared 3 years ago

774 views

17:38

Konsentrasi Larutan (in Bahasa)

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2.8K views

7:30

Oil and Fats

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Shared 3 years ago

694 views

9:54

How to do proper titration - Acid-Base Titration (experiment)

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Shared 3 years ago

1.9K views

4:29

Paper Chromatography (Theory)

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Shared 3 years ago

1.4K views

5:43

Qualitative test for protein - Biuret test (Theory)

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Shared 3 years ago

1.6K views

6:29

Qualitative Tests for Sugar - Benedict and Iodine Tests (Theory)

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Shared 3 years ago

2.7K views

5:57

Anti-Markovnikov | Kharasch Effect

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Shared 3 years ago

767 views

9:07

No Repository VS Repository Turnitin

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Shared 3 years ago

8.1K views

8:42

Markovnikov Rule

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Shared 4 years ago

1.1K views

7:22

How to check plagiarism on turnitin | Easy and fast - Turnitin Plagiarism Checker

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Shared 4 years ago

4.3K views

3:05

Easy referencing and citation - How to cite using Mendeley desktop | 3 minutes tutorial

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Shared 4 years ago

1K views

2:22

How to download and install Mendeley desktop? | in 2 minutes | Easy way

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Shared 4 years ago

2.6K views

10:00

Carbohydrate - Biochemistry | Fischer and Haworth Projections

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Shared 4 years ago

3K views

3:15

Hydrogen bonding in DNA - the number of hydrogen bond in DNA - Biochemistry

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Shared 4 years ago

4K views

8:44

Nucleic acids - DNA and RNA - Biochemistry

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Shared 4 years ago

2.1K views

6:05

Sigma and pi bonds | How to count sigma and pi bonds - Organic Chemistry

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Shared 4 years ago

1.3K views

11:30

Polymers | Addition and Condensation polymerizations | Organic Chemistry

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Shared 4 years ago

1.5K views

9:29

Ester and esterification reaction - Organic Chemistry

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Shared 4 years ago

1.5K views

6:57

How to draw skeletal structure? Skeletal formula - Organic Chemistry

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Shared 4 years ago

2.9K views