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Lesson Posted on 11/11/2022

Shaheen

I'm a teacher and provide online home tution since I have a degree in Bachelor of science (B Sc) presently...

Chemical reactions and equations : Equation: Reactant + product = chemical equation Reactant; The substance which undergo a chemical change in the reaction Method of writing a reaction: Arrow must be placed between the reactants on Left hand side and product on the right hand side Plus... read more

Chemical reactions and equations :

Equation:

• Reactant + product = chemical equation
• Reactant; The substance which undergo a chemical change  in the reaction

Method of writing a reaction:

• Arrow must be placed between the reactants on Left hand side and product on the right hand side
• Plus sign (+) must be written between the reactants
• Arrow head must point towards the products which shows the direction of the reaction.

Example:  Magnesium + oxygen= magnesium oxide

Mg+02→MgO

Balancing. a chemical equation

1. First draw boxes around each formula
2.  List the number of atoms of different elements present in unbalanced equation
3. Start balancing with compound that contains maximum no of atoms
4. Finally check the correctness of the balanced equation.
5.  Write symbols of physical state

Example: step -1

Fe+H20 →Fe3O4+ H2

Step -2 :

 Element no of atoms in reactants  (LHS) Number of atoms in product (RHS) Fe 1 3 H 2 2 O 1 4

step 3:

3Fe+ 4H2O→Fe3O4+4H2

Step 4:

 Element LHS RHS Fe 3 3 H 8 8 O 4 4

Step 5:

3Fe(s) +4H20(g)→Fe3O4(s) + 4H2(g)

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Lesson Posted on 04/05/2022 Learn Science

Debraj Paul

I had completed MSc in Maths I am an experienced, qualified icse board school teacher with over 12+...

>> switching from petrochemicals to oleochemicals. >>Oleochemicals are chemical compounds derived from natural fats and oils that can be used as raw materials or as supplemental materials in a variety of industries. >> oleochemicals that are commonly used in today’s market... read more

>> switching from petrochemicals to oleochemicals.

>>Oleochemicals are chemical compounds derived from natural fats and oils that can be used as raw materials or as supplemental materials in a variety of industries.

>> oleochemicals that are commonly used in today’s market include:

• Palm oil
• Coconut oil
• Soy
• :::::::::::Oleochemicals are used in a wide range of industries including::::::::::::
• Personal care
• Cosmetics
• Coatings, adhesives, elastomers and sealants
• Household and industrial cleaning
• Lubricants, grease and metalworking
• Food
• Pharmaceuticals and nutraceuticals

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Lesson Posted on 30/03/2022 Learn Science +1

Roshina B.

My name is Roshina.I have completed my PhD from AMU.I have professional degree of teaching like BEd....

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Chirag Sharma

with 7 years of teaching experience in Maths and sciencr for class 9th to 12th

Monkey has natural skill of Climbing.
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Roshan Kumar

A good name is better than a good face.

Photosynthesis is a process where green plants use light energy CO2 and water to produce glucose oxygen and water. 6CO2+6H2O--- C6H12O6 +6O2 +6H2O
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Nishant Mittal

Mathematics Teacher with 3+ year experience

Formula of Photosynthesis is - 6CO2 + 12H2O --> C6H12O6 + 6O2 + 6H2O
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Answered on 17/01/2022 Learn Science +1

V Sriya Rao

Im new for this app contact me 8688471709 myself I'm sriya 4th year graduate from Loyola

Best way is to make the class more interesting and innovative to grab students' attention and asking for their opinion/answer or something time by time.
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Deepa R

I teach NEET UG students .

If you are interested and dedicated in a particular branch then that's going to be the best one for you...
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Sapna

Organic chemistry
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Asok Kumar P

20 years experience teaching Class 8 to 12 Physics,Chemistry and Mathematics and NEET/JEE/KEAM Coac

Hydrogen gas is obtained Fe+H2SO4-FeSO4+ H2
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