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What is main difference between pie and sigma bond

Posted by Shivam Pandit 7 years, 7 months ago

1 answers

Madhav Garg 7 years, 7 months ago

A single bond is always sigma bond while a double bond is a sigma and a pi bond. The double bond may consists of both pi bonds as in case of C2 and B2

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what is quantum numbers

Posted by Nancy Rajput 7 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Manisha Patel 7 years, 7 months ago

It is a set of 4 nos. with the help of which we can get complete info about all the electrons in an atom

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What is inorganic compound

Posted by Dhiviya Dhiviya 7 years, 7 months ago

CBSE > Class 11 > Chemistry

2 answers

Manpreet Sharma 7 years, 7 months ago

Substances which we get from nature not from organisms

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Ďãřşháñăã Yadav???✊ 7 years, 7 months ago

Inorganic compounds are compounds which do not contain carbon and are not derived from living matter.

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All material are matter but all matter are not material

Posted by Dhiviya Dhiviya 7 years, 7 months ago

CBSE > Class 11 > Chemistry

2 answers

Dhiviya Dhiviya 7 years, 7 months ago

Very big thanks

0Thank You

Manpreet Sharma 7 years, 7 months ago

This statement states that solid , liquid and gases are made from atom as all matters contains atoms but material refers for solids so all material are matter but all matter are not material as matter contain liquids and gases .

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Vitamin C is essential for the prevention of scurvy. Combustion of 0.2000g of vitamin C gives 0.2998g of CO2 and 0.819g of H2O. What is the empirical formula of vitamin C?

Posted by Ďãřşháñăã Yadav???✊ 7 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Kis kis ne 11th ki class start shuru kar di.

Posted by Anand Raj 7 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Ďãřşháñăã Yadav???✊ 7 years, 7 months ago

apni terf se start ker di.

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Is there anybody from varanasi,??

Posted by A B 7 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Ďãřşháñăã Yadav???✊ 7 years, 7 months ago

0Thank You

ANSWER

a student place does gas jar containing air in the upside down position over a gas jar full of Red Brown bromine vapour sea observed that the red brown colour is best according to the jar containing air based on in this observation the student concluded that it is only the bromine vapour with his moves up and diffuse into air in the opposite the air from the persuaders not move down by diffusion into the lowest continuous do you agree with this version of the student give reason for your answer

Posted by Gaurav Vishwakarma 7 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is mol?

Posted by Rhea Singh 7 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Dhiviya Dhiviya 7 years, 7 months ago

Unit of mole

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I have heard that the syllabus of chemistry have been increased . Is it true???

Posted by Samaira Sen 7 years, 7 months ago

CBSE > Class 11 > Chemistry

6 answers

Mahesh M 7 years, 7 months ago

Solid state is already there

0Thank You

Khushbu J 7 years, 7 months ago

yes if you will go through the old syllabus also then also the left portion you will learn in 12th class

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Manika Gupta 7 years, 7 months ago

There r many more changes

0Thank You

Praval Pratap 7 years, 7 months ago

Yes a new chapter named solid state is added in class 11

1Thank You

Priti Kumari 7 years, 7 months ago

No physics syllabus change 1 unit is added

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Mahesh M 5 years, 9 months ago

No idiot

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Calculate the number of atoms present in 1.4 of N2 MOLECULE

Posted by Manpreet Sharma 7 years, 7 months ago

CBSE > Class 11 > Chemistry

3 answers

Sabyasachi Das 7 years, 7 months ago

And then finding no of molecule multiply by 2 As Na×2×0.05 That is answer

0Thank You

Sabyasachi Das 7 years, 7 months ago

Mole = total molecular weight/ ome molecular weight So n = 1.4÷28 = o.05 THEN no of N2 MOLECULE = .05×Na Na = 6.023×10 power 23

0Thank You

Sarthak Chawla 5 years, 9 months ago

In 28g = 6.022 ×10 ki power 23 molecules In 1g =avogadro no. ÷ 28 In 1.4 g= avogadro no. ÷ 28 ×1.4 molecules Now multiply the answer with 2

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How are 0.50 mol NA2CO3 and 0.50 M NA2CO3 DIFFERENT?

Posted by Manpreet Sharma 5 years, 9 months ago

CBSE > Class 11 > Chemistry

2 answers

Sabyasachi Das 7 years, 7 months ago

Is it a qns

0Thank You

Dhiviya Dhiviya 7 years, 7 months ago

Question is wrong

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ANSWER

Ammonia contains 82.35% nitrogen and 17.65% of hydrogen. water contains 88. 90% of oxygen at 11.10% of hydrogen. nitrogen trioxide contain 63.15% of oxygen and 36.85% of Nitrogen show that this illustrate law of reciprocal proportion?

Posted by Khushbu J 7 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Write the values of n,l,m and s for electron filling 21st place in the atom of element with atomic number 24 .

Posted by Manpreet Sharma 7 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Koi quantum numbers ke baare me batao???

Posted by Sundaram Vishal 7 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Manpreet Sharma 7 years, 7 months ago

To describe each electron in an atom in different orbitals we need a set of three numbers known as quantum numbers .These are designated as n,l,m and ml

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What is dilution law

Posted by Pratibha Pal 7 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

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Who provides energy in atom

Posted by Pratham Pateriya 7 years, 7 months ago

CBSE > Class 11 > Chemistry

2 answers

Abhishek Soni 7 years, 7 months ago

Fundamental particles - electron, proton, neutron. And Other particles such as masons.

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Anuj Jadhav 5 years, 9 months ago

Me...?

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What is vander waal forces?

Posted by Shivani Jha? 7 years, 7 months ago

CBSE > Class 11 > Chemistry

2 answers

Nancy Rajput 7 years, 7 months ago

Molecules can attract each other at moderate distances and repel each other at close range. The attractive forces are collectively called "van der Waals forces". Van der Waals forces are much weaker than chemical bonds, and random thermal motion around room temperature can usually overcome or disrupt them.

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Soumyadeep Dass 7 years, 7 months ago

Vander waal force are weak intermolecular force.Present between covalent molecule.

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ANSWER

S.i unit of volume

Posted by Avani Saini 7 years, 7 months ago

CBSE > Class 11 > Chemistry

3 answers

Priti Kumari 7 years, 7 months ago

Cm^3 or m^ 3

1Thank You

Avani Saini 7 years, 7 months ago

Thx

4Thank You

Eram Anjum 7 years, 7 months ago

The SI unit of volume iss m^ 3

6Thank You

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Difference between gram atom and mass of one atom?

Posted by Harshit Varshney 7 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Difference between moles and molecules?

Posted by Harshit Varshney 4 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 4 years, 7 months ago

<center>Mole</center>	<center>Molecule</center>
<center>The quantity of anything that has the same number of atoms present in 12.0 g of 12C isotope.</center>	<center>A molecule is a chemical species that is formed due to the combination of several atoms through chemical bonding.</center>
<center>Used to measure the quantity of a substance</center>	<center>Used to name a combination of several atoms</center>
<center>Give in the unit “mol”</center>	<center>Number of molecules can be measured as the number of “mol” present</center>