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Deepanshu Tiwari 1 month, 1 week ago

Brother there are three formulas to find moles(n) The first one is :- n = given weight / mol. Weight The second one is :- n = no of particles/Na And the third one is :- n = volume of gas/22.4 l

Akash Kumar 1 month, 1 week ago

What's is the power of electri current

M R 1 month, 1 week ago

Nogic

2Thank You

ANSWER

Case study on how chemistry Is used in space

Posted by Sudeep Reddy 1 month, 2 weeks ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

A compound is found to contain 23.3% magnesium, 30.7% sulphur, and 46.0% oxygen. What is the empirical formula of this compound? [ATOMIC MASS OF Mg, S and O : 24u,32u,and 16u respectively

Posted by R Padmavathi 1 month, 2 weeks ago

CBSE > Class 11 > Chemistry

1 answers

Peace Parichha 1 month, 1 week ago

ANSWER

State law of chemical equilibrium and equilibrium constant

Posted by Harmeet Kaur 1 month, 2 weeks ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Study of different types of atomic models

Posted by Deepika Kaushik 1 month, 2 weeks ago

CBSE > Class 11 > Chemistry

1 answers

Janhavi Singh 1 month, 2 weeks ago

The different types of atomic models are:- 1)Rutherford atomic theory 2)The Bohr atomic model 3)Atomic models 4)Modern atomic model 5)Atom 6)Electron cloud model 7)Plum pudding model

ANSWER

(Pressure volume work) derivation solve it. And explain.

Posted by Harshit Malik 1 month, 3 weeks ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Gay lussac's law kya h? Explain.

Posted by Harshit Malik 1 month, 3 weeks ago

CBSE > Class 11 > Chemistry

2 answers

Harshit Malik 1 month, 1 week ago

Thanks 👍

Janhavi Singh 1 month, 2 weeks ago

Gay-Lussac's law states that the pressure of a gas is directly proportional to the absolute temperature provided mass & volume of gas is constant. At constant volume, the pressure of the gas increases with increase in temperature and decreases with a decrease in temperature which is expressed as: PαT -------- (at constant volume & mass)

2Thank You

ANSWER

1 mole m kitne Avogardo no. Hote h ??

Posted by Harshit Malik 1 month, 3 weeks ago

CBSE > Class 11 > Chemistry

5 answers

Pooja Saini 3 days, 16 hours ago

6.022×10²³

Harshit Malik 1 month, 1 week ago

Thanks 🙏🏽👍

Shikha Yadav 1 month, 2 weeks ago

6.022×10²³

Akshat Singh 1 month, 3 weeks ago

6.022×10^23

Shanu Yadav 1 month, 3 weeks ago

6.022*10^23

ANSWER

Calculate the wave no. of He+2 when transition is formed and n2=2 and n1=1

Posted by Sandhya Das 1 month, 3 weeks ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Tell me about, (1) J.J Thomson model. (2) Rutherford model. (3) Bohr's model....

Posted by Harshit Malik 1 month, 3 weeks ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Who gave the concept of first atom?

Posted by Harshit Malik 1 month, 3 weeks ago

CBSE > Class 11 > Chemistry

4 answers

Payal Singhal 1 month, 2 weeks ago

Dalton

Harshit Malik 1 month, 3 weeks ago

Thanks 👍 aap sbhi ko

Ayushi Patel 1 month, 3 weeks ago

Dalton

Khushi Chauhan 1 month, 3 weeks ago

Dalton

ANSWER

Electronic configuration of fe3+ for class 10

Posted by Anjali Chauhan 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Shyam Kumar 2 months ago

But it's not class 10.... this is from class 11 type

Adithya Dev 2 months ago

1s2 2s2 2p6 3s2 3p6 3d4 4s0

ANSWER

Class 11 ch 8 redox reaction notes

Posted by Bhaumik Rai 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Harshit Malik 1 month, 3 weeks ago

Yes mere pass m h Redox chapter k notes

ANSWER

What will be the molarity of the solution which is obtained by dissolved 2g of Naoh in deciliter of its aqueous solution

Posted by Priyanshi Kathayat 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Adithya Dev 2 months ago

No of moles = 2g /40g = 1/20 = 0.05 mol. // Volume given = 1 decilitre = 1/10th L. Therefore, molarity M = 0.05 / (1/10) = 0.05 × 10 = 0.5 mol/L.//

ANSWER

How to find atomic radii?

Posted by Vaishnavi B 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Adithya Dev 2 months ago

Well, varies. If you want to find for unbonded atoms, you may have to consider Vander Waal's radius. For covalently bonded atoms, it is covalent radius, for metallic lattices, it is metallic radius. All have the same formulae which is half the intermolecular distance but the difference comes in their ranges. Generally, Vander Waal's > Metallic > Covalent > Ionic radii.

ANSWER

Define entropy what happens to the entropy when liquid changes into vapour

Posted by Shifa Shifa 2 months, 1 week ago

CBSE > Class 11 > Chemistry

2 answers

Harman Kaur 1 month, 1 week ago

Increases

Adithya Dev 2 months ago

Entropy is the measure of disorder or, kinetic freedom of particles in a system. When from liquid to vapour, disorder increases, so the entropy also increases.

ANSWER

A compound is found to contain 54.67% of carbon 9.1% of hydrogen and the remaining is oxygen. Vapour density of the compound is 22. Calculate its molecular formula

Posted by Sai Akshara 2 months, 1 week ago

CBSE > Class 11 > Chemistry

1 answers

Adithya Dev 2 months ago

No of moles of C = 54.67 (out of 100g) / 12 = 4.5 . No of moles of H = 9.1 / 1 = 9.1 . No of moles of O = (100 - 63.77) / 16 = 2.25 . Therefore, ratio of empirical formula = C:H:O = 2:4:1 . So, empirical formula = C2H4O (Mass = 24 + 4 + 16 = 44) So, N = M/EM = 2 × 22/44 = 1.// Therefore, molecular formula = C2H4O. //

ANSWER

Define accuracy

Posted by Gourav Tanwar 2 months, 1 week ago

CBSE > Class 11 > Chemistry

1 answers

Nancy 🙂✨ 2 months ago

Accuracy is the degree of closeness between a measurement and it's true value

ANSWER

Please guide me how should I prepare for chp 3 for my half early exam?

Posted by Khushi Patel 2 months, 1 week ago

CBSE > Class 11 > Chemistry

1 answers

Archana Pal 2 months, 1 week ago

For which subject

4Thank You

ANSWER

Mass of c12 atom of carbon

Posted by Lakshay Raghav 2 months, 2 weeks ago

CBSE > Class 11 > Chemistry

4 answers

Bhumika Singh 2 months, 1 week ago

1.99×10^ -23 grams

Purushartha Sharma 2 months, 1 week ago

1.99*10–23 g

Anushka Singh 2 months, 2 weeks ago

1.99×10^-23g

Ratan Patwa 2 months, 2 weeks ago

144

ANSWER

How can 1 mole of carbon (12gms) when burnt in air, can produce 1mole of carbondioxyde (44gms)? If so, then why it is not proving the Law of Conservation of Mass (12gms to 44gms)?

Posted by Shabd Sarthak 2 months, 3 weeks ago

CBSE > Class 11 > Chemistry

1 answers

Adithya Dev 2 months, 2 weeks ago

It is possible, but you aren't able to comprehend the question. Air in which it is burnt does contain O2 which reduces carbon to CO2. So you must involve O2 as a reactant in the reaction. Now, check the LHS, we get 12g (C) + 32g (O2) = 44g = Mass of CO2 in RHS. Law of conservation of mass never has been wrong except in radioactive decays.

ANSWER

Definition of de broglie equations

Posted by Ajay Nagar 2 months, 3 weeks ago

CBSE > Class 11 > Chemistry

2 answers

Khushi Panwar Gujjar 2 months, 2 weeks ago

E=hc/lemda

Abhishek Pandey 2 months, 3 weeks ago

What is there 8 elements in 2 nd period

ANSWER

How to find empirical formula

Posted by Arpita G 2 months, 3 weeks ago

CBSE > Class 11 > Chemistry

1 answers

Harshit Malik 1 month, 3 weeks ago

Empirical formula = n/ molecular formula

ANSWER

Chapter 2 quiz test

Posted by Ram Harsh Pandey 2 months, 3 weeks ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Is thermodynamics an important chapter?

Posted by Ishika Bhalla 2 months, 3 weeks ago

CBSE > Class 11 > Chemistry

4 answers

Anushka Singh 2 months, 2 weeks ago

Yes But this chapter in only in 11 like you don't need it in 12 it's not in 12 My teacher told me

Sourabh Prajapati 2 months, 2 weeks ago

Yes

Gaurav Singh 2 months, 3 weeks ago

I think you should learn this chapter

Gaurav Singh 2 months, 3 weeks ago

Yes

ANSWER

Write any three limitations of Bohr model of an atom

Posted by Manasa Mannu 2 months, 4 weeks ago

CBSE > Class 11 > Chemistry

2 answers

Diya Rana 2 months, 3 weeks ago

He did not explain the multielectronic species He unable to explain zeeman or stark effect Only gave the flat model of atom Ok i will clarify you that stark effect is the splitting of main line in presence of electronic field or in the case of zeeman effect there will u includ presence of magnetic field I hope it will helps u🌼☘️

Nidhi Deshwal 2 months, 3 weeks ago

•Didn't tell about splitting of electron in magnetic and electric field . •Didn't tell about arrangement of electrons in an atom.