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What is lattice gain enthelpy

Posted by Jyoti Abrol 6 years, 6 months ago

2 answers

Yogita Ingle 6 years, 5 months ago

The amount of energy required to completely separate one mole of the solid ionic compound into constituent gaseous ions is known as lattice enthalpy.Lattice enthalpy is a measure of the strength of an ionic compound.

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Jyoti Abrol 6 years, 6 months ago

The amount of energy which is required to remove one mole of any molecule is called lattice enthalpy

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When electrons make transition to ground state, it produces 6 different types of photons, if 2nd excitation potential of sample is 193.64volt then identify the sample

Posted by Jothi Guhan 6 years, 6 months ago

CBSE > Class 11 > Chemistry

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Hybridisation of C6H6 and geometry of C6H6

Posted by Akanksha Panday 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

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Classify Matter on the basis of physical state

Posted by Shalini Yadav 6 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Renu Yadav 6 years, 5 months ago

Matter exist in three physical states : solid ,liquid and gas.

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Vanshika Kalra 6 years, 6 months ago

On the basis of physical state it can be classified as Solid Liquid Gas Plasma Bose Einstein condensate

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Ethanoic acid formula

Posted by Naina Kaalyan 6 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Simran Simmu 6 years, 6 months ago

C²H5 COOH ...

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Priya Yadav 6 years, 6 months ago

C2H5COOH

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How much sulfuric acid can be obtained from 5 kg of pure sulphur S8

Posted by Rishi Ranjan 6 years, 6 months ago

CBSE > Class 11 > Chemistry

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Write the difference between precision and accuracy

Posted by Ronit Raj 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

Precision means the closeness of various measurements for the same quantity. Accuracy is the agreement of a particular value to the true value of the result.

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Project on wastage of solid and water disposal in village's for 11class

Posted by Jagsir Singh 6 years, 6 months ago

CBSE > Class 11 > Chemistry

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How many moles of dioxygen are present in 64 gram of dioxygen?

Posted by Albi Kashamkattil 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Priya Yadav 6 years, 6 months ago

2 moles

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why water has maximum density at 4 degree centigrade

Posted by Hrishikesh Boruah 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

Water has maximum density at 4⁰C because when temperature is increased from o to 4⁰C, some of the H-bonds break and molecules come closer and density increases till 4⁰C because volume decreases. But, above 4⁰C, the kinetic energy of molecules increases which leads to increase in volume and density decreases.

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h2x is a dibasic Acid which dissociates completely in water .Which one of the following is a molarity of an aqueous solution of this Acid which has a pH of 1

Posted by Anushka Gautam 6 years, 6 months ago

CBSE > Class 11 > Chemistry

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ANSWER

Why fully filled and half filled orbitals are more stable

Posted by Nitesh Bansal 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

The half-filled and fully-filled orbitals are more symmetrical than any other configuration and symmetry leads to greater stability.

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Calculate the percentage composition of carbon,hydrogen,oxygen in glucose c6H12o6

Posted by Mohammed Kabeer 6 years, 6 months ago

CBSE > Class 11 > Chemistry

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Calculate the molarity of solution prepared by dissolving 175.5g NaCl in enough water to form 1L of brine solution. (a) Calculate molarity of solution if its density is 1.25g ml (b) Calculate the mole fraction of NaCl

Posted by Tanya Singh 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Ayush Vishwakarma?? 6 years, 6 months ago

Molarity= no. Of moles of solute ÷ mass of solute (in 1L). Molarity= mass÷molecular mass/ mass of solute ÷ 1000. Density=mass÷volume then volume =mass÷density

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Calculate the molecular formula of the compound assuming whole of the hydrogen in the compound is present in water of crystallization &molecular formula is 332 10-5H2O 20-10H20

Posted by Vasantha Kumari 6 years, 6 months ago

CBSE > Class 11 > Chemistry

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If we say the 1 molar NaOH than it means of NaOH dissolve in one liter of solution

Posted by Priya Pandey 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Ayush Vishwakarma?? 6 years, 6 months ago

Nhi, one mole mtlb hota hai uss element ka atomic mass . Eg. NaOH , Na =23 and O =16 and H= 1. Then its atomic or molar mass of NaOH is 40.

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Explain radicals

Posted by Pankaj Singh 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

A radical is an atom, molecule, or ion that has an unpaired valence electron.

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Illustrate Avogadro's law with an example.

Posted by Tanya Singh 6 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Ayush Vishwakarma?? 6 years, 6 months ago

Volume of gas is directly propotional to the number of molecules. Like eg, 100 ml of methane has y molecules. 50 ml of methane has y/2 molecules. 200 ml of methane has 2y molecules. These eg illustrate avogadro's law.

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Akanksha Dutta 6 years, 6 months ago

Avogadro proposed that the equal volumes of all gases at the same temp. and pressure should contain equal no. of molecules

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Which of the following are isoelectronic species i.e, these have same number of electrons - Na , K, Mg , Ca , Ar

Posted by Js Multani 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

Na⁺and Mg²⁺are iso-electronic species (have 10 electrons) K⁺, Ca²⁺, are iso- electronic species (have 18 electrons).

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What is the molecular formula of ethylene ?

Posted by Pinku Meena 6 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Jyoti Abrol 6 years, 6 months ago

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Sakshi Singh 6 years, 6 months ago

C2H4

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If in a reaction, HNO3 is reduced to NO, the mass of HNO3 absorbing one mole of electrons would be plss send me process wid explaination

Posted by Arya Jha? 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

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Find the no. Of molecules in 192 g of Sg

Posted by Garima Jain 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

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How many molecules are present in 8.5g of ammonia

Posted by Bhavika Rathwa 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

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What is stichometeric

Posted by ??Amrit ???????? ????Thakur???????? 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

Stoichiometry is the study of the quantitative relationships or ratios between two or more substances undergoing a physical change or chemical change .

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Calculate the atom present 4.68 g of o^2

Posted by Sachin Rajput 6 years, 6 months ago

CBSE > Class 11 > Chemistry

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What is the difference between atomic weight and atomic mass?

Posted by Lavish Vaishnav 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Shubham Banerjee 6 years, 6 months ago

Atomic mass is the mass of one atom of an element whereas atomic weight is the average mass of all the isotopes of that element

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What is difference between d block and transition

Posted by Tanashri Wagh 4 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 4 years, 6 months ago

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What is differens between d block and trnsition

Posted by Tanashri Wagh 6 years, 6 months ago

CBSE > Class 11 > Chemistry

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What do you mean by election spin quantum number

Posted by Maninderjeet Singh 6 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Urvi Sharma 6 years, 5 months ago

And it's value is +1/2 or -1/2

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Sia ? 6 years, 6 months ago

The Spin Quantum Number (ms) describes the angular momentum of an electron. An electron spins around an axis and has both angular momentum and orbital angular momentum.

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2.746g of compound on analaysis 1.94g of silver 0.268g of sulphur and 0.538g of oxygen. calculate the empirical formula (hint : atomic mass of 1 silver=108 2 sulphur =32 3 oxygen = 16

Posted by Vaibhav Singh Udawat 6 years, 6 months ago

CBSE > Class 11 > Chemistry