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Baron Jöns Jacob Berzelius (Swedish: [jœns ˈjɑ̌ːkɔb bæˈʂěːlɪɵs];[1] by himself and his contemporaries named only Jacob Berzelius,[2] 20 August 1779 – 7 August 1848) was a Swedish chemist. Berzelius is considered, along with Robert Boyle, John Dalton, and Antoine Lavoisier, to be one of the founders of modern chemistry.[3] Berzelius became a member of the Royal Swedish Academy of Sciences in 1808 and served from 1818 as its principal functionary. He is known in Sweden as the "Father of Swedish Chemistry". Berzelius Day is celebrated on 20 August in honour of him.[4][5]

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Harsh Yadav 1 week, 2 days ago

Find the electronic communications

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What is white revaluation

Posted by Yadhu Krishna 1 week, 3 days ago

CBSE > Class 09 > Science

5 answers

Suju Apee 1 week, 2 days ago

There is nothing about white revalution in google sorry

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Harsh Yadav 1 week, 2 days ago

Milk

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Anand Chaudhary 1 week, 3 days ago

White revolution is associated milk production

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Ketan Manusmare 1 week, 3 days ago

White revolution is associated with milk production

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Somya Nohwar 1 week, 3 days ago

The revolution associated with a sharp increase in production of milk

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How to produce by sound bat

Posted by Akhilendra Pratap Gopalan Gopalan 1 week, 3 days ago

CBSE > Class 09 > Science

1 answers

Suju Apee 1 week, 2 days ago

By ultrasonic sound

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Find number of moles of h2 in 10g of h2.

Posted by Gurpreet Kaur 1 week, 4 days ago

CBSE > Class 09 > Science

1 answers

Suju Apee 1 week, 2 days ago

F***

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What is momentum? And it's S.I. unit?

Posted by Saanvi Chopra 1 week, 4 days ago

CBSE > Class 09 > Science

5 answers

Aryan Hs 1 week, 3 days ago

The quantity of motion is momentum matlab bas momentum ye hai ki jitna Jada tumhe dard hoga lagne ke baad utna momentum hoga

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Raunak Yadav 💯💯 1 week, 3 days ago

The SI unit of momentum is kgm/sec

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Raunak Yadav 💯💯 1 week, 3 days ago

The product of mass and velocity is called momantum

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Himangi Himangi 1 week, 4 days ago

The product of mass and velocity is called momentum M=mv

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Gurpreet Kaur 1 week, 4 days ago

Momentum is vector quantity whose direction is the same as the direction of velocity The SI unit of momentum is a kilogram meter per second (kg m/s). Momentum is the quantity that is used to describe the state of motion of an object with a non-zero mass. Hence, momentum is applicable to any moving object. If is the mass of an object and is the velocity with which this body travels, then momentum can be expressed as p → = m v → . In other words momentum is a , product of the mass of a particle and its velocity.

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What is the roll of SER in vertebrates?

Posted by Deepak Kumar Gupta 1 week, 4 days ago

CBSE > Class 09 > Science

2 answers

Raunak Yadav 💯💯 1 week, 3 days ago

Smooth endoplasmic reticulam

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Parth Deore 1 week, 4 days ago

Ser means sadak ekdum rough

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Explain process of endocytosis

Posted by Shivprasad Janrao 1 week, 4 days ago

CBSE > Class 09 > Science

3 answers

Manya Khorana 5 days, 17 hours ago

Amoeba obtains its food through false feet when it sees food particles it engulfs the food. This food is then broken down into food vacuole which contains digestive enzymes. This process is known as endocytosis i.e. Amoeba obtains its food through a process called endocytosis

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Mr Omkar Pal 1 week, 4 days ago

Syllabus kya hai

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Hisham Ah 1 week, 4 days ago

Amoeba obtains its food through false feet called pseudopodia. Whatever it sees food particles it engulfs the food with the help of pseudopodia. This food is then broken down into food vacuole which contains digestive enzymes. This process is known as endocytosis. In short Amoeba obtains its food through a process called endocytosis

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हाउ कैन एक्वेटिक एनिमल्स कैन प्रेस अंडरग्राउंड वॉटर

Posted by Roshan Sharma 1 week, 5 days ago

CBSE > Class 09 > Science

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Differentiate between leucoplast and chloroplast

Posted by Blossom Taekookie 1 week, 5 days ago

CBSE > Class 09 > Science

5 answers

Manju Rajesh Rakhi 1 week, 4 days ago

Leucoplast is colour less . It stores fats, protien and sugar. Chloroplast it is a green color this pigment use in chloroplast in photosynthesis process. Simple ans

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Yashraj Pashankar 1 week, 4 days ago

Leucoplast is a colourless plastid or white colour plastid where oil, starch and protine granules are stored and green colour pigment present is known as chlorofil performed photosynthesis is called chloroplast

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Saumya Gaur 1 week, 5 days ago

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Smriti Gupta 1 week, 5 days ago

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Suryanshu Singh 1 week, 5 days ago

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What is plasmodesmata?

Posted by Saanvi Chopra 1 week, 6 days ago

CBSE > Class 09 > Science

1 answers

Saumya Gaur 1 week, 5 days ago

Plasmodesmata (Pd) are co-axial membranous channels that cross walls of adjacent plant cells, linking the cytoplasm, plasma membranes and endoplasmic reticulum (ER) of cells and allowing direct cytoplasmic cell-to-cell communication of both small molecules and macromolecules (proteins and RNA).

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Differentiate between True solution, colloid and suspension through graphical approach only. Represent 5 examples of each graphically.

Posted by Aarav Raj 1 week, 6 days ago

CBSE > Class 09 > Science

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How many air speed of sound .

Posted by Akhilendra Pratap Gopalan Gopalan 1 week, 6 days ago

CBSE > Class 09 > Science

2 answers

Smriti Gupta 1 week, 5 days ago

The speed Of Sound At temp 20 C is 343 Meters Per Second At temp 0 C is 331 Meters Per Second

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Amardeep Singh Kandhola 1 week, 6 days ago

The speed Of Sound At temp 20 C is 343 Meters Per Second At temp 0 C is 331 Meters Per Second

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Enery can niether be created but Sound is also a energy So, how sound is created ...........

Posted by Saumya Gaur 2 weeks ago

CBSE > Class 09 > Science

2 answers

Raunak Yadav 💯💯 1 week, 3 days ago

Sound is created by vibrating any two object

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Saumya Gaur 1 week, 5 days ago

The Answer is sound is not created sound is produced by changing the energy like kinetic energy is changed in sound

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What is the difference between pitch and loudness?

Posted by Sarthak Kathuria 2 weeks ago

CBSE > Class 09 > Science

3 answers

Amardeep Singh Kandhola 1 week, 6 days ago

Loudness Depends On Amplitude Pitch depends on the Frequency of Sound

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Akhilendra Pratap Gopalan Gopalan 1 week, 6 days ago

loudness are loud voice and soft voice

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Akhilendra Pratap Gopalan Gopalan 1 week, 6 days ago

Sound of shrillness and deep

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What is formula of sound of speed.

Posted by Akhilendra Pratap Gopalan Gopalan 2 weeks ago

CBSE > Class 09 > Science

5 answers

Manya Khorana 5 days, 17 hours ago

Wavelength*frequency

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Smriti Gupta 1 week, 5 days ago

Velocity = wavelength x frequency

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Amrendra Pratap Gopalan 1 week, 6 days ago

Speed of sound = lambda/ time

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Himanshu Gupta 2 weeks ago

Velocity = wavelength x frequency

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Mehul Chugh 2 weeks ago

Velocity = wavelength x frequency

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Who are decavered by protan and who was giving name not chiting Google

Posted by Akhilendra Pratap Gopalan Gopalan 2 weeks ago

CBSE > Class 09 > Science

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Explain bohr model of an atom

Posted by Fire Motive 2 weeks ago

CBSE > Class 09 > Science

3 answers

Smriti Gupta 1 week, 5 days ago

Atom is distributed for shell , k, L, M ....

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Akhilendra Pratap Gopalan Gopalan 2 weeks ago

Atom is distributed for sell , k, L, M ....

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Akhilendra Pratap Gopalan Gopalan 2 weeks ago

2x square

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What are the characteristics of matter ?

Posted by Fire Motive 2 weeks ago

CBSE > Class 09 > Science

1 answers

Himanshu Gupta 2 weeks ago

Particle of matter have force of attraction between them Particle of matter have intermolecular space between them

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First lows if motion

Posted by Shadaab Saifi 2 weeks ago

CBSE > Class 09 > Science

3 answers

Saanvi Chopra 1 week, 6 days ago

An object at rest will remain at rest until an external force acts on it

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Akhilendra Pratap Gopalan Gopalan 2 weeks ago

An object of the motion to motion and rest that is not use asetranal forced.

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Pravalika S 2 weeks ago

Object continuous to be in a state of rest or of uniform motion along with the straight line unless acted upon by an unbalanced force

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Why cinema halls big auditoriums are provided with sound observing materials?

Posted by Anoushka Bhasin 2 weeks, 1 day ago

CBSE > Class 09 > Science

1 answers

Shubh Goel 2 weeks, 1 day ago

Becouse of reverbiration

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Draw and explain the formation of magnesium ion

Posted by Anushka Sharma 2 weeks, 2 days ago

CBSE > Class 09 > Science

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How do manuers help in increasing productivity of the crops in different soil conditions

Posted by Dharaga Dharshini 2 weeks, 2 days ago

CBSE > Class 09 > Science

2 answers

Saumya Gaur 1 week, 5 days ago

Manures help to increases the fertility of soil so the crop is grow faster then the farmer sell the material and productivity is increasing with the help of manures

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Sarthak Kathuria 2 weeks ago

Manures increases the fertility of soil.Hence productivity increases

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Differentiate between prokaryotic and eukaryotic

Posted by Sudhanshu Kumar 2 weeks, 3 days ago

CBSE > Class 09 > Science

2 answers

Paras Prajapati 1 week, 4 days ago

Prokaryotic cell ----------------------------- Size of a cell is generally small . Nucleus is absent. Nucleons is absent. Cell organelles are absent.

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Radhika Sharma 2 weeks, 2 days ago

Prokaryotic cell :--------~ 1. Nucleus doesn't have nuclear membrane 2. Cell organelles are absent 3. 70s ribosomes are present 4. Unicellular 5. Small in size Eukaryotic cell :::------------~ 1. Nucleus covered with nuclear membrane 2. Cell organelles are present 3. 80s ribosomes are present 4. Multicellular 5. Large in size .

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change the speed of 6m/s into km/s

Posted by Sneha Das 2 weeks, 4 days ago

CBSE > Class 09 > Science