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An aqueous solution of NaOH having density 1.1Kg/dm^3 contains 0.02 mole fraction of NaOH. Find - (i) The % by weight of NaOH solution (ii) The strength of NaOH solution

Posted by Gyaneshwar Tiwari 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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An hourly requirement of an astronout can be satisfied by the energy realesed when 34g of sucrose are burnt in his body. how many grams of oxygen would he require to carry in space capsule to meet his requirement for one day

Posted by Ashish Tiwari 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Where sigma bond is formed and where pii bond???

Posted by Smreeti Biswas🤙🏻 7 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Shivshant Upadhyay 7 years, 5 months ago

In 1 bond there is 1,2,3bond there is only 1 sigma bond and in 2 there is only 1 pie bond and in 3 bond there is 2 pie bond and 1 sigma bond inside in it .

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What is osmosis

Posted by Shiva Tiwari 5 years, 9 months ago

CBSE > Class 11 > Chemistry

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Sakshi Singh 7 years, 5 months ago

Osmosis are thw harmful toxins whuich is generally present in water

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What is acif

Posted by Mehak Bajwa 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Mehak Bajwa 7 years, 5 months ago

What is acid

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Difference b|w orbit and orbitals..

Posted by Shreya Gour 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Mr. Thakur☆☆ 7 years, 5 months ago

ORBITAL:- (1.) Orbital is defined as a region in space where the probability of finding electrons is maximum. (2.) It represents three dimensional motion of an electron around the nucleus.

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Mr. Thakur☆☆ 7 years, 5 months ago

ORBIT:- (1.) Orbit is defined circular path around the nucleus in which electrons revolve. (2.) It represents the presence of motion. (3.) Orbit give definite path of an electron. This concept is not according to the uncertainty principle.

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Are the oxidation State and covalency same N2O5, (Al(cl)(H2O)O5)

Posted by Harsh Saharan 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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A compound is formed by two elements x and y.atom of element y(as anions) make ccp and those of the element x (as cations ) occupy all the octahedral voids. What is the formula of the compound?

Posted by Chetan Kaira 5 years, 9 months ago

CBSE > Class 11 > Chemistry

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What is covalent radius?

Posted by Shanaya Rajput 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Isha Bhardwaj 7 years, 5 months ago

It is defined as the half of the internuclear distance between two atoms bonded by covalent bonds

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Yogita Ingle 7 years, 5 months ago

Covalent radius is half the distance between the centers of two atoms in a diatomic molecule of an element. The distance is determined by X-ray diffraction or electron diffraction. Covalent radius is expressed in terms of picometers or angstroms.

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State any five characteristics of Modern periodic table

Posted by Sahil Bhadana 7 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Anjana Lakshmi M 7 years, 5 months ago

8 periods & 18 groups . Increasing atomic no . Halogens given a correct place . Easy & convenient .Many anomalies related to earlier systems were corrected.

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Configuration of N2 +

Posted by Nirbhay Singh Rathor 7 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

Anjana Lakshmi M 7 years, 5 months ago

1s2 2s2 2p1 as 2 electrons are removed

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Anjali Sirohi 7 years, 5 months ago

1s2 2s2 2p6 3s2 3 p3

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Why is the first ionisation energy of the transition elements resonably constant?

Posted by Viswa R 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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What is orbital

Posted by Viahal Bahadur 7 years, 5 months ago

CBSE > Class 11 > Chemistry

4 answers

Shatayu Ganvir 7 years, 5 months ago

Where the value of psi^2 is positive

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Anjana Lakshmi M 7 years, 5 months ago

Orbital is the 3 dimensional space where there is maximum probability of finding electrons

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Viswa R 7 years, 5 months ago

Subshell is also known as orbital

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Nancy Rajput 7 years, 5 months ago

An orbital is the region around the nucleus with a finite probability of finding an electron. It is represented by a mathematical function and describes the wave behavior of either one or a pair of electron that resides in the orbital.hopes it help you

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Molecular weight of a dibasic acid, whose 0.49 grams neutralizes 50ml. Of 0.2 Newton barium hydroxide completely is

Posted by Suvarna Pulagam 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Use of keto and oxo prefix in functional group of ketone.When??

Posted by Durgesh Singh 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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%age of Ca ( Na 3)2

Posted by Miss Tyagi☺ 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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What is isolated gaseous atom

Posted by Sandeep Kumar 7 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

???. Pragati 7 years, 5 months ago

Ionization enthalpy is the minimum amount of energy which is needed to remove the most loosly boundelectron from a neutral isolated gaseous atom to form a cation.The cations are formed when the neutral atoms loses electrons.But for losing electrons they, should be in isolated gaseous form .

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Bohr's model

Posted by Zaid Khan 7 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Miss Tyagi☺ 7 years, 5 months ago

The electron in hydrogen atom can move around the nucleus in a circular path of fixed radius nd energy . these path r called orbits . the energy of electron does not change with tym.

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if 0. 5 Mol of Cabr2 to is mixed with 0. 2 mole of K3PO4 the MAXIMUM number of moles of CA3(PO4)2 that can be formed is:

Posted by Abhishek Bharti 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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Find no of moles 20g of he

Posted by Priyanshu Singh 7 years, 5 months ago

CBSE > Class 11 > Chemistry

3 answers

Sachin Rain 7 years, 5 months ago

Formula is GM ➗ atomic mass 20 ➗ 4 So answer is 5

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Deni C 7 years, 5 months ago

As 2g of He has 1 moles then 20g of He equals 10 moles Hope it helps?

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Riaz Khan 7 years, 5 months ago

5moles

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<font color="red" size="5">Aufbau principale ?</font>

Posted by Luv Kapoor 7 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Gouri Sharma 7 years, 5 months ago

In the ground states,electrons are filled in the atomic orbitals according to their increasing order.

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What will be the syllabus for class 11 during this season??

Posted by Vipin Nonia 7 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Gouri Sharma 7 years, 5 months ago

Available on cbse website

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What is anatom

Posted by Sudara Samy 7 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Mirnal Dalal 7 years, 5 months ago

The smallest unstable part of matter is called an atom

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Which of the following has the largest size?? options are-----N,O,S,P

Posted by Tapan Pandey 7 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

??Rohit ?? Negi 7 years, 5 months ago

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The mean free path lambda of a gas sample is given by

Posted by Rishi Manvar 7 years, 5 months ago

CBSE > Class 11 > Chemistry

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What is boric acid

Posted by Dilkhush Kumar 7 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Shivani Jha? 7 years, 5 months ago

a white soluble weakly acid crystalline solid used in the manufacture of heat-resistant glass and porcelain enamels, as a fireproofing material, and as a mild antiseptic. Formula: H3BO3 Hope it'shelp you ^_^

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Syllabus

Posted by Vishal Raj Singh 7 years, 5 months ago

CBSE > Class 11 > Chemistry