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    • Posted by Shiven Handa 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Kamlesh Patidar 5 years, 8 months ago

    mordern abc

    0Thank You

    P W 5 years, 8 months ago

    Modern abc+ by Uttam Narayan Tripathi

    1Thank You

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    • Posted by Nikhil Kumar 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 3 answers

    Kumkum Yadav 5 years, 8 months ago

    This section is for asking doubts not to judge strength in butthole?. Don't be oversmart okay?

    0Thank You

    Pk . 5 years, 8 months ago

    Paramagnetic ???

    0Thank You

    Abc 420 5 years, 8 months ago

    Paramagnetic

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    • Posted by Abhijeet Kumar 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Abhijeet Kumar 5 years, 7 months ago

    Please somebody answer me

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    • Posted by Abhijeet Kumar 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Abhijeet Kumar 5 years, 7 months ago

    Please somebody answer me

    0Thank You

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    • Posted by Abhijeet Kumar 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Abhijeet Kumar 5 years, 7 months ago

    Please somebody answer me

    1Thank You

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    • Posted by Abhijeet Kumar 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Abhijeet Kumar 5 years, 7 months ago

    Please someone answer me

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    • Posted by Nikhil Kumar 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Abc 420 5 years, 8 months ago

    Divide by valence factor. You will get 9.2

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    • Posted by Nikhil Kumar 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Rohit Krishna 5 years, 8 months ago

    Law of reciprocal proportion states that 'When definite mass of an element A combines with two other elements B and C to form two compounds and if B and C also combine to form a compound,their combining masses are in the same proportion or bear a simple ratio to the masses of B and C which combines with a constant mass of A'.

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    • Posted by Saksham 😀😄😋 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Abc 420 5 years, 8 months ago

    No difference

    2Thank You

    ANSWER

    • Posted by Kunal Singh 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Yogita Ingle 5 years, 8 months ago

    The standard atmosphere is a unit to measure pressure, which is in turn measured in Pascals.
    i.e - 101325 Pa = 101.325 kPa.
    Here, Pa stands for Pascal and kPa stands for kilopascal.

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    • Posted by Jatin Saini Saini 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Yogita Ingle 5 years, 8 months ago

    Cathode rays consist of negatively charged material particles called electrons. These rays deflect towards the positive plate of an electric field. The charge to mass (e/m) for the particles in the nature of the gas taken in the discharge tube.
    Anode rays consists of positively charges material particles. These rays deflect towards the negative plate of an electric field.

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    • Posted by Pushpender Singh 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Nikhil Kumar 5 years, 8 months ago

    While separating a mixture of ortho and para nitrophenols by steam distillation, o-nitrophenol will be steam volatile due to presence of intramolecular hydrogen bonds. In case of p-nitrophenol, intermolecular hydrogen bonding is present which results in strong association of molecules. Hence, p-nitrophenol is not steam volatile.

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    • Posted by Nagasaki Ali 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Yogita Ingle 5 years, 8 months ago

    Stoichiometry is an important concept in chemistry that helps us use balanced chemical equations to calculate amounts of reactants and products. Here, we make use of ratios from the balanced equation. In general, all the reactions that take place are dependent on one main factor, how much substance is present.

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    • Posted by Rohit Kumar 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Rohit Kumar 5 years, 8 months ago

    Thanks

    0Thank You

    Yogita Ingle 5 years, 8 months ago

    Electron Photon
    It is matter. It is energy.
    It has mass. It has no mass.
    It carries a negative charge. It doesn’t carry any charge.
    The speed of an electron can be zero or anything under the speed of light. It is impossible for an electron to achieve the speed of light. Photon travels at the speed of light.

    1Thank You

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    • Posted by Pk . 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Anwesha Boruah 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Subhjot Kaur 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Rohit Krishna 5 years, 8 months ago

    We know that, No. of moles =Total no. of molecules/Avogadro no. Therefore,no. of moles of nitric acid(HNO3)=2*10^23/6*10^23.=1/3 moles... (We have approximated 6.022*10^23 as 6*10^23 to solve the problem easily) Now,we know that no.of moles=given mass/molar mass Let x be the given mass of nitric acid. Molar mass of nitric acid=63 Substituting the values,we get, 1/3=x/63 Therefore,x=21g

    2Thank You

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    • Posted by Miss Ananya 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Miss Ananya 5 years, 6 months ago

    Thnku ?

    1Thank You

    Rohit Krishna 5 years, 8 months ago

    JJ Thomson discovered electrons in 1897 using cathode ray experiment

    1Thank You

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    • Posted by Palak Sindwani 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Rohit Krishna 5 years, 8 months ago

    Ans:4.4g Ca(OH)2 + CO2 gives CaCO3 + H2O From stoichiometry,we can understand that '1 mole of Ca(OH)2 (molar mass:74g)' reacts with '1 mole of CO2 (molar mass :44g)' to give '1 mole each of CaCO3 and H2O. (molar mass:100g and 18g respectively)' Or,44g of CO2 gives 100g of CaCO3. Hence,to precipitate 1g of CaCO3, 44/100g=0.44g of CO2 is required. (Unitary method) Therefore, 10g of CaCO3 is obtained from 0.44*10=4.4g of CO2...

    2Thank You

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    • Posted by Preeti Saini 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Deepak Pandey 4 years, 6 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Sia ? 4 years, 6 months ago

    A hypothesis is a tentative explanation that can be tested by further investigation. A theory is a well-supported explanation of observations. A scientific law is a statement that summarizes the relationship between variables.

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    • Posted by Daljit Kahlon 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Yogita Ingle 5 years, 8 months ago

    A mixture is a combination of two or more substances (elements or compounds) which is not done chemically.
    Mixtures are two types Homogeneous Mixtures and Heterogeneous mixtures.
    Homogeneous Mixtures: A Homogeneous mixture has a uniform composition of its components throughout its mass. It does not have visible boundaries of separation between the various components. For example a sugar solution or a salt solution.
    Heterogeneous Mixtures: A Heterogeneous mixtures does not have a uniform composition throughout its mass also it has visible boundaries of separation between various components. For example mixture of sand and water.

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    • Posted by Vidhu Prakash Gupta 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Yogita Ingle 5 years, 8 months ago

    BEC stands for Bose-Einstein Condensate which is defined as the state of matter of a dilute gas of bosons which is cooled to temperatures very close to absolute zero.

    1Thank You

    Shreya S❤️ 5 years, 8 months ago

    A form of matter

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    • Posted by Neha Sharma 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Paritosh Pandey 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Amit Singh 5 years, 8 months ago

    A mole is defined as the amount of a substance that contains exactly 6.02214076 * 1023 ‘elementary entities’ of the given substance.

    1Thank You

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    • Posted by Rohit Krishna 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Nikhil Kumar 5 years, 8 months ago

    Steric number of central atom phosphorus is 5. Therefore its hybridisation is sp3d or dsp3.

    1Thank You

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    • Posted by Sahil Channa 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Riya Kumari 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Pragya Sharma 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Rohit Krishna 5 years, 8 months ago

    Eg of water:When Avogadro took 6.022*10^23 molecules of water,it weighed exactly 18g ie,the molecular mass of water.So avogadro number of any atoms/molecules/ions etc were called 1 mole and hence 18g of water=1 mole

    3Thank You

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    • Posted by Raj Saxena 5 years, 8 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Rohit Krishna 5 years, 8 months ago

    Down the group,both lattice enthalpy as well as hydration enthalpy decreases.But the decrease in lattice enthalpy is rapid and hence "comparatively" hydration enthalpy will be greater.Therefore solubility increases

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