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Why hydrogen peroxide is used as pollution controller

Posted by Ipman Akhter 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Why hydrogen peroxide is used as a pollution controller

Posted by Ipman Akhter 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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If 5kg of n2(g) & 10kg of h2(g) are mixed to produced nh3(g). Calculate the nh3(g) formed. Identify the limiting reactant in the production of nh3 in this situation

Posted by Kanhaiya Rawat 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Different b/w election negativity and electron gain enthalpy

Posted by Nikhil Pal 8 years, 4 months ago

CBSE > Class 11 > Chemistry

2 answers

Amar Kumar 8 years, 4 months ago

Electron egativity is a the tendency of an atom to attract the lone pair in bond towards itself. It is a hypothetical It is like temperature. It is just an indirect way to measure the kinetic energy of a system.

Electron gain enthalpy is defined as the energy released/absorbed by an isolated gaseous atom when an electron is brought inside it.

Electron affinity is the amount of energy gain or lost by the surrounding of an isolated gaseous atom when an electron is brought inside it.. The greater the negative value of electron gain enthalpy, the greater the stability of the atom. The greater the positive value of electron affinity, the greater the stability of the atom. Electron gain enthalpy = -(electron affinity)

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Bhawani Tanwar 8 years, 4 months ago

Electron gain enthalpy is defined as the removal of the valence electron from the valence shell of the isolated gaseous atom.

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Full form of IUPAC

Posted by Pk Hh 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Pk Hh 8 years, 4 months ago

International union of pure and applied chemistry

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How many molecules of co2 are present in 1 l of containing 0.03 % volume of co2 at stp

Posted by Gaurav Rana 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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How to find no. of atoms in 1g of cl2 (g)?

Posted by Rajnish Kumar 8 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Vivi Kumar 8 years, 4 months ago

No. of atoms=(Given mass)/(Molar mass)×avogadro's no. Therefore, no. of atoms =1g/2(35.5)×6.022×10²³ =0.014 ×10²³ =1.4×10²¹

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The value of delta H and delta S for reaction C +Co2 give 2Co are 170kJ and 170J/K .How to solve it that it is spontaneou

Posted by Anny Upa 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Electrons are rotating around the nucleas with constant force but how it is possible when there is position due air any many more things?

Posted by Chaitanya Mendu 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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shapes of pcl5 and Sf4 by VSEPR theory

Posted by Anant Mehta 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Anant Mehta 8 years, 4 months ago

1Traigonal by Framina 2 Tetra Headeral

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What is mot

Posted by Debapriyo Bhattacharjee 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Bhawani Tanwar 8 years, 4 months ago

Molecular orbital theory

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Meaning of dipole

Posted by Ana Sayad 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Bhawani Tanwar 8 years, 4 months ago

Two oppositely charged particals

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Explain the importance of four quantum numbers

Posted by Sneha Vijaykumar 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Shivaditya Pandey 8 years, 4 months ago

n=energy of electrons l=sub shell m=orbital s=orientation of electrons

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Atomic mass of oxygen in 8 or 16

Posted by Shrishti Turkar 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Priyanka Kharwar 8 years, 4 months ago

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Is it emperical formula or imperical formula?

Posted by Rohit Rajesh 8 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Priyanka Kharwar 8 years, 4 months ago

It is empirical formula

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In basic medium eqn if we do as acidic medium and later convert into basic why ans is not correct?

Posted by Priyal Mehra 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Calculate volume occupied by 7g N2 at 27 degree Celsius and 750 mm of Hg?

Posted by Bhupesh Baloda 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Why water exist in liquid phase whereas sulphur hydroxide exist in gaseous phase at room temperature

Posted by Sheikh Seeba 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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What is resonance

Posted by Tanima Sarkar 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Sheikh Seeba 8 years, 4 months ago

When a compound or a molecule forms more than one leuise structure and all the structure are stable ,this phenomenon is known as resonance......???

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What is formal charge

Posted by Divesh Rakhecha 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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The first and second ionization potentials of helium atoms are 2.458ev and 54.4ev respectively. Calculate the energi in kj required to produced 1 mole of He2+ ion

Posted by Rashi Agg 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Define dipole moment

Posted by Saurabh Saroj 8 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Sahdev Sharma 8 years, 4 months ago

A dipole moment is a quantity that describes two opposite charges separated by a distance.

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Method of doing electronic configuration

Posted by Simran Rajput 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Amar Kumar 8 years, 4 months ago

1.Find your atom's atomic number.

2.Determine the charge of the atom

3.Memorize the basic list of orbitals

4.Understand electron configuration notation

For example, here is a simple electron configuration: 1s2 2s2 2p6. This configuration shows that there are two electrons in the 1s orbital set, two electrons in the 2s orbital set, and six electrons in the 2p orbital set. 2 + 2 + 6 = 10 electrons total. This electron configuration is for an uncharged neon atom (neon's atomic number is 10.)

5.Memorize the order of the orbitals

6.Fill in the orbitals according to the number of electrons in your atom.

Thus, the electron configuration for calcium is: 1s2 2s2 2p6 3s2 3p6 4s2.

Note: Energy level changes as you go up. For example, when you are about to go up to the 4th energy level, it becomes 4s first, then 3d. After the fourth energy level, you'll move onto the 5th where it follows the order once again. This only happens after the 3rd energy level.

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Water droplets are spherical why

Posted by Saurabh Saroj 8 years, 4 months ago

CBSE > Class 11 > Chemistry

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Sahdev Sharma 8 years, 4 months ago

Surface tension is responsible for the shape of liquid droplets. Although easily deformed, droplets of water tend to be pulled into a spherical shape by the cohesive forces of the surface layer.

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What is electro megnitic radiation

Posted by Rakibul Islam 8 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Sahdev Sharma 8 years, 4 months ago

Electromagnetic radiation (EM radiation or EMR) refers to the waves of the electromagnetic field, propagating (radiating) through space carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-, and gamma radiation.

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Calculate formal charge on so42-,co32-

Posted by Ankit Tiwari 8 years, 4 months ago

CBSE > Class 11 > Chemistry