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Predict the internal energy change for an isolated system

Posted by Himanshu Raman 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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What is the role of chemistry in our life

Posted by Ved Payla 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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zinc chloride is soluble in organic solvents but magnesium chloride is not soluble.Why?

Posted by Karnajit Mayanglambam 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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What is first law of yehi Thermo dynamics

Posted by Nitin Chaudhary 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Nitin Chaudhary 8 years, 2 months ago

It states that energy niether be created nor be destroyed.

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Advantages of hybridization

Posted by Kuldeep Patidar 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Rxn :- 2A (g) +B (g)_> 2D (g) ;∆u°=-10.5Kj &∆S°=-44.1Jk. Calculate ∆G° for rxn & predict whether rxn may occur spontaneous

Posted by Aryan Kumar 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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What is half filled and completely filled of subshell means and how does it influence on ionization of enthalpy?

Posted by Arjun Chandran 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Bohr calculate energy

Posted by Shivani Sharma 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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What is the shape of ethane molecule

Posted by Narendra Khatri 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Iupac name of : ch3-o-ch2-o-ch2-n-ch2-s-ch2-o-ch3

Posted by Rajat Nagrath 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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What is the density of flourine at S.T.P. (molar mass F=38)?

Posted by Preetam Kumar 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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What is the unit of R

Posted by Preetam Kumar 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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What is the major difference between ionization enthalpy and lattice entlapy

Posted by Aman Singhal 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Sia ? 4 years, 6 months ago

Lattice enthalpy is a measure of the strength of an ionic compound. Whereas, ionization enthalpy is the amount of energy required to remove an electron from an atom.

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What is conjugation?

Posted by Preeti Chahar 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Jasmer Panjetha 8 years, 2 months ago

a conjugated system is a system of connected p-orbitals with delocalized electrons in molecules with alternating single and multiple bonds, which in general may lower the overall energy of the molecule and increase stability.

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Barometer

Posted by Sujeet Kumar 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Preeti Chahar 8 years, 2 months ago

A device used to measure presure

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Calculate the percentage composition of each element in sodium sulphate. (Given Na=23,S=32,O= 16).

Posted by Naziya Shaikh 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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In which shell (K,L,M,N) h/2πis the angular momentum of the electron?

Posted by Naziya Shaikh 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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What will be the maximum number of electrons that can have principal quantum number n=2 and spin quantum number s=+1/2 ?

Posted by Naziya Shaikh 8 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Rahul Poddar 8 years, 2 months ago

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for each of the following pairs predict which one has lower first ionization enthalpy a) N and O b) Na and Na+ c) I and I-

Posted by Charu Latha 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Describe the shape of BF3 and [BF4] minus

Posted by Charu Latha 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Define static equilibrium....

Posted by Mansi Shokeen 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Mansi Shrivastava 8 years, 2 months ago

When forces acting on object which is at rest are balanced ,then we say object is in state of static equilibrium. the resultant of these forces equal to zero.

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Please explain what is conjugate acid and base

Posted by Kratika Jain 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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What is composition of dark matter? Why dark matter can't seen by humans?

Posted by Tarakeesh Ch 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Resonance structure of aniline

Posted by Twinkle Dewangan 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Find out the volume of o.2 mole of so2 at STP

Posted by Kunal Gupta 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Ttttgsheje

Posted by Shubham Jagtap 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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what is modern preodic law

Posted by Syed Yasir 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Tushar Kharb 8 years, 2 months ago

It state's that all physical and chemical properties are the periodic function of their atomic number ??

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Observation of Practical exam

Posted by Megha Ghatole 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Is there any ideal gas.?

Posted by Nitin Mehta 8 years, 2 months ago

CBSE > Class 11 > Chemistry

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Pooja Choudhary 8 years, 2 months ago

Most real gases behave qualitatively like an ideal gas. Many gases such as nitrogen, hydrogen, noble gases, and some heavier gases like carbon dioxide can be treated like ideal gases within reasonable tolerances.

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Oxidation number of NaCO3

Posted by Umang Sardana 8 years, 2 months ago

CBSE > Class 11 > Chemistry