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The axial bonds are longer than equatorial bonds because of greater repulsion from equatorial bonds. So axial bonds are nearer to equatorial bonds and this causes greater repulsion resulting in elongation of bond length.

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What is important I'm chemistry

Posted by Monica Gautam 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Sia ? 3 years, 1 month ago

Because it is so fundamental to our world, chemistry plays a role in everyone's lives and touches almost every aspect of our existence in some way. Chemistry is essential for meeting our basic needs of food, clothing, shelter, health, energy, and clean air, water, and soil.

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Vasudha Vasudha 3 years ago

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how we prepare H2O2 by barium peroxide

Posted by Nikhil Patel 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Vasudha Vasudha 3 years ago

Industrial Method of Preparation Hydrogen peroxide is prepared by the electrolysis of 30% ice-cold H2SO4. When acidified sulfate solution is electrolyzed at high current density, peroxodisulphate is obtained. Peroxodisulphate is then hydrolyzed to get hydrogen peroxide. Boiling Point: 150.2 °C Molecular Weight/ Molar Mass: 4.0147 g/mol Density: 1.05 g/cm3 Melting Point: -0.43 °C

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Give condensed and bond line structure of 2- hydroxy -1,2,3- propanetricarboxylic acid

Posted by Jashanpreet Kaur 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Sanya Sharma 3 years, 1 month ago

Notes chapter 5

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which of the following radiation has largest energy? (a) lamda =30nm (b) lamda =300pm (c) v= 3×10^12 s-1 (d) v=3×10s^-1

Posted by Vaibhav Pandey 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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I want easy simple notes plz suggest some content or website where i can find it

Posted by Harman Kaur 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Ayushi Parmar 3 years ago

Studiestoday.com AND Topprs

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Soumya Sahu 3 years, 1 month ago

U can prefer learn cbse website

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which has maximum number of atoms? a. 24 g of C(12) (b) 56g of Fe (56) c.27g of Al(27) (d) 108g of Ag (108)

Posted by Vaibhav Pandey 3 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Chaithanya Kumar 8Th Class 3 years, 1 month ago

24grams of carbon

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which of the following has maximum mass? (a) 1.0mole of H2 gas . (b) 0.5 mole of sucrose (C12H22O11) . (c) 1.2 mole of silver. (d) 22.4 L of N2 at S.T.P

Posted by Vaibhav Pandey 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Tarang Sharma 3 years, 1 month ago

Option (d)

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If CO is carbon monooxide CO2 is carbon dioxide Then why CO3 is carbonate not carbontrioxide?

Posted by Navneet Kaur 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Sia ? 3 years, 1 month ago

The salt of carbonic acids are called carbonates and are characterized by the carbonate ion, CO32-. The carbonate ion is the simplest oxocarbon anion, consisting of one carbon atom surrounded by three oxygen atoms in a trigonal planar arrangement.

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How to calculate oxidation numbers

Posted by Suhana Naaz 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Harsh Madhesiya 2 years, 11 months ago

Question- (C)O2 - We have to find the oxidation no. Of (C) ???????? Answer- let the oxidation no. Of (C) be(x). Now, X + 2(-2) =0 X-4=0 (X=+4)Ans. So, the oxidation no. Of (C) is (+4).

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Mannu Dahiya 3 years, 1 month ago

First u hace to leran or read the rules given in book

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Suhana Naaz 3 years, 1 month ago

Please send answer later

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if isotopic distribution of C12 and C1= is 98.0%and 2.0%respectively ,then the no. of C12 atoms in 12 g of carbon is

Posted by Harman Dhillon 3 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Anjan Karthi 3 years, 1 month ago

12 g of carbon would contain 6.022 × 10^23 atoms. Therefore, no of carbon-12 atoms in 12 g of carbon = 98/100 × 6.022 × 10^23 = 590.156 × 10^21.//

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write the formulas for calculating the radii and energy of stationary states?

Posted by Divansh Jamwal 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Sia ? 3 years, 1 month ago

The Bohr's energy of a stationary state of the hydrogen atom is given as En=n2h2−2πme4.

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Dikshant Sharma 3 years, 1 month ago

-2π^4me^4/n^2h^2

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write the formulas for calculating the radii and energy of stationary states

Posted by Divansh Jamwal 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Sia ? 3 years, 1 month ago

The Bohr's energy of a stationary state of the hydrogen atom is given as En=n2h2−2πme4.

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Dikshant Sharma 3 years, 1 month ago

-2π^2me^4/n^2h^2

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Calculate the mass per cent of different elements present in sodium sulphate

Posted by Himanshi Sharma 3 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 3 years, 1 month ago

Calculations:
Mass% of an element in a compound is calculated using the relation,
= {tex}\frac{\text { Mass of that element in the compound }}{\text { Molar mass of the compound }} \times{/tex}100
Now the molar mass of
Na₂SO₄ = 2(23.0) + 32.0 + 4 {tex}\times{/tex} 16.0
= 142 g mol^-1
So, Mass per cent of sodium
= {tex}\frac{46}{142} \times{/tex}100
= 32.39%
Similarly,
Mass per cent of sulphur
= {tex}\frac{32}{142} \times{/tex}100
= 22.54%
Mass per cent of oxygen
= {tex}\frac{64}{142} \times{/tex}100
= 45.07%

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Vasper siddhabt

Posted by Naman Bisht 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Chapter 9

Posted by Dropdi Devi 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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The number of electrons,protons and neutrons in a species are equal to 18 , 16 and 16 respectively. Assign the proper symbol of the species.

Posted by Ayush Prasad 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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Swayam Gupta 3 years, 1 month ago

S-²

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A 100 watt bulb emits monochromatic light of wavelength 400 nm. Calculate the number os protons emitted per second by the bulb.

Posted by Karan Khan Khan 3 years, 1 month ago

CBSE > Class 11 > Chemistry

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A solution contains 40g of sodium chloride which is dissolved in sufficient amount of water to make the total mass of the solution 250g calculate the concentration in term of mass by volume percentage of the solution (density of resulting solution =1.5g/mol)

Posted by Arpita Singh 3 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Anjan Karthi 3 years, 1 month ago

Mass of solution W = 250 g. Density of solution D = 1.5 g/mol. Therefore, volume of solution = W / D = 250 / 1.5 = 166.6 cm^3. Hence, W / V% = 40 × 100 / 166.67 = 23.99 %. //

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Yaswanth Varma 3 years, 1 month ago

Jjj

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Caffeine has the following percent composition:carbon 49.48%,hydrogen 5.19%,oxygen 16.48% and nitogen 28.85%. Its molecular weight is 194g/mol. what is its empirical formula?What is the molecular formula?

Posted by Himshika Bista 3 years, 1 month ago

CBSE > Class 11 > Chemistry