Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.

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Chemical bonding and molecular structure exercise solutions

Posted by Phuentsok Om 4 years, 5 months ago

CBSE > Class 11 > Chemistry

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What will be the molarity of a solution, which contains 5.85 g of NaCl(s) per500 mL?

Posted by Harsh V 4 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Vivek Kumar 4 years, 5 months ago

0.2 M

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Importance OF chemistry ?

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Posted by Royal Thakur ? 4 years, 5 months ago

CBSE > Class 11 > Chemistry

3 answers

Saloni Thakur 4 years, 5 months ago

What is this???

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? S. S. ? 4 years, 5 months ago

haha...?he nailed it??

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⠀ 4 years, 5 months ago

Strain students and burden on teachers

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A polychromatic light have wavelength 400 and 625 nm respectively . Find the difference between their energy ?

Posted by R H 4 years, 5 months ago

CBSE > Class 11 > Chemistry

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If in A-3 no.of electrons are present 18 then calculate total no of neutrons and protons given mass number 39

Posted by Rahul Mahawar 4 years, 5 months ago

CBSE > Class 11 > Chemistry

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A violet colour light have wavelength 380 nm . Find its frequency and energy

Posted by R H 4 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Ankit Mishra 4 years, 5 months ago

have given that wavelength = 380 nm .. convert it into m by multiplying 10 ^ -9 and then put the formula that frequency = c / wavelength [c is the speedof light in vaccum which is equal to 3 × 10 ^ 8 m/s ] then u will have ur frequency = 7.8 × 10 ^ 14 second inverse ... and then put the formula E = h × frequency [h = 6.626 × 10 ^ -34 J/s] and then simplify it u will have ur ans as 4.88 × 10 ^ -20 J.... So , frequency = 7.8 × 10 ^ 14 Hz Energy = 4.88 × 10^ -20 J

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Hlo guys...... Meeting after 4 months..... ? How are u all?

Posted by R G R 4 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

Shreyash Srivastava 4 years, 5 months ago

Hey Naira, remember!?

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Naira(奈拉)..... ?️⚡?️⚡ ??? 4 years, 5 months ago

Hlo

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What happens when alkali metals react with dihydrogen ?

Posted by Arya Sutar 4 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

A - Tech 4 years, 5 months ago

Baap ko puchiye jaake

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Yogita Ingle 4 years, 5 months ago

The alkali metals react with dihydrogen at about 673K (lithium at 1073K) and form hydrides.

2M + H₂ --> 2M⁺H^-

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Active mass of 0.64 grams SO2 in 10lit vessel is

Posted by Nafia Tarannum 4 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Ojhal Sharma 4 years, 5 months ago

Active Mass = Molecular Mass×VolumeGiven Weight Active Mass = 64×100.64 = 10−3M

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What is the molecular mass of so4?

Posted by Jinu ?? 4 years, 5 months ago

CBSE > Class 11 > Chemistry

3 answers

Akhifa Sheik 4 years, 4 months ago

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Yogita Ingle 4 years, 5 months ago

Molar mass of sulphur (S) is 32

Molar mass of oxygen (O) is 16

32+4(16) = 32 + 64 = 96

Molar mass of sulphuric acid i.e. SO4 is 96.

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Tec Om 4 years, 5 months ago

Sulphur (s) has atomic mass = 32,oxygen (o)=16
molecular mass of So₄=32+16 x 4
=32+64
96

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Out of LiF and LiCl which has higher covalent character and why

Posted by Anjali _ 4 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 4 years, 5 months ago

lithium iodide is more covalent than lithium chloride because the electronegativity in halogens is in the following sequence F>Cl>Br>I.

Thus flourine is most electronegative while iodine is least in halogens.

Covalent character of bond increases down the group so i.e. F

Therefore lithium iodide is more covalent than lithium chloride.

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Heya EveryOne ?‍♂️

Posted by Manan Soni ? 4 years, 5 months ago

CBSE > Class 11 > Chemistry

4 answers

Manan Soni ? 4 years, 5 months ago

Me too

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Ruhi Rao 4 years, 5 months ago

I am fine, what about you?

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Manan Soni ? 4 years, 5 months ago

Heyy hru

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Ruhi Rao 4 years, 5 months ago

Hii ...

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What is acid??

Posted by Aadya Singh 4 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

? S. S. ? 4 years, 5 months ago

12:30 or near 4 or 5 O'clock....?✌

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? S. S. ? 4 years, 5 months ago

Achha✌??? btw tumhe ek baat batani hai insta pe baadme btaungi?

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5. Arrange the following in the increasing order of size:- F^-,Li^+,Na^+,Cl^-

Posted by A@Kash Kumar 4 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

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Equivalent mass of acid??

Posted by Aadya Singh 4 years, 5 months ago

CBSE > Class 11 > Chemistry

3 answers

Aditya Sharma 4 years, 5 months ago

Me too

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Aditya Sharma 4 years, 5 months ago

How are you

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Aditya Sharma 4 years, 5 months ago

Heyy aadya

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Equivalent mass of base??

Posted by Aadya Singh 4 years, 5 months ago

CBSE > Class 11 > Chemistry

3 answers

? S. S. ? 4 years, 5 months ago

questions hi questions dikh rhe hai cbse pe aadya name se?????????

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Aditya Sharma 4 years, 5 months ago

Kya

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? S. S. ? 4 years, 5 months ago

abb tumhe kya hogya????

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Equivalent mass of salt??

Posted by Aadya Singh 4 years, 5 months ago

CBSE > Class 11 > Chemistry

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Calculate the molarity of water if its density is 1000kg/m³ ?

Posted by Aadya Singh 4 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Gaurav Seth 4 years, 5 months ago

Molarity = Number of moles of solute per litre of solution in molar concentration

M = no of moles / volume

Mole = mass/molar mass = 1000/18= 55.56 mol

1l of water = 1000mL = 1Kg

Density = 1000kg/m3

therefore Molarity = 55.56mol/1L = 55.56mol/L

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What is the molality of a solution which contains 36g of glucose in 250g of water?

Posted by Aadya Singh 4 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

Ruhi Rao 4 years, 5 months ago

Sahi h Royal Thakur ...

3Thank You

Gaurav Seth 4 years, 5 months ago

Given,

Mass of solute, glucose = 36 g

Mass of solvent, water = 250 g

Molar mass of glucose = 180 g/mole

Molality : It is defined as the number of moles of solute present in the one kilogram of solvent.

Formula used :

where,

= mass of solute, glucose

= mass of solvent, water

= molar mass of solute, glucose

Now put all the given values in the above formula, we get

Therefore, the molality of solution is, 0.8 mole/Kg

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Calculate the Mole fraction of benzene in a solution containing 30℅ by mass of it in carbon Tetrachloride??

Posted by Aadya Singh 4 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Mole fraction??

Posted by Aadya Singh 4 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Ruhi Rao 4 years, 5 months ago

Mole fraction represents the number of molecules of a particular component in a mixture divided by the total number of moles in the given mixture. It's a way of expressing the concentration of a solution. Mole Fraction formula. The molar fraction can be represented by X.

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