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Calculate the number of molecules in A) 1g of water B) 5600^3 of nitrogen STP

Posted by Aysha Nisar 3 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Vaibhav Kumar Deo ×͜× 3 years, 1 month ago

(A) 1g of water H^2O = 18 mole 1 mole of compound =molecular mass/6.022×10^23 Therefore, 6.022×10^23/18 ANSWER = 3.3455×10^22.

ANSWER

A solution is prepared by adding 10 gram of Nacl to 18gram of water. Calculate mole fraction of nacl

Posted by Ravi Patel Student 3 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Sonam Sairawat 3 years, 2 months ago

1/1.8 mol🤔🤔

ANSWER

Calculate the number of atoms of the consitudent elements in 53g of Na2CO3

Posted by Sri Lakshmi P 3 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Subhransu Sahoo 3 years, 2 months ago

Given mass=53g Molar mass of Na2CO3 = 23×2+12+48 = 46+60= 106g No. Of moles = given mass /molar mass = 53/106 =0.5 Now 1 mole = 6.02×10^23 atoms So, 0.5 moles = 0.5×6.02×10^23. = 3.010×10^23 atoms

ANSWER

What you mean by integral ratio

Posted by Subhransu Sahoo 3 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Shwêtã Árîc 3 years, 2 months ago

the ratio of one type of hydrogen to another within a molecule.

ANSWER

A compound contains 4.07% hydrogen 24.27% carbon and 71.65%chlorine its molar mass is 98.96g what are its empirical and molecular formula ?

Posted by Navreet Kaur 3 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Tanushree Mukherjee 3 years, 1 month ago

Hydrogen — 4.07% Carbon–24.27% Chlorine—71.65% Molar Mass Is 98.96G To Calculate Empirical Formulae, first, we have to divide the given percentages of atoms by their molecular masses. Hydrogen — 4.07 / 1 = 4.07 Carbon–24.27 / 12 = 2.02 Chlorine—71.65 / 35.5 = 2.01 Now we have to divide all the values with the lowest obtained value. Hydrogen — 4.07 / 2.01 = 2 Carbon–2.02 / 2.01 = 1 Chlorine— 2.01 / 2.01 = 1 Therefore, the empirical formula is CH2Cl To Calculate Molecular Formulae, we need to find the weight of the empirical formula CH2Cl 12 + 2*1 + 35.5 = 49.5 The molecular weight- 98.96 is double of empirical weight. Therefore molecular formula is C2H4Cl2

ANSWER

If 10 moles sugar is added into the 50ml of water, then find out the mole fraction of both the component

Posted by Charmi Dave 3 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Sonam Sairawat 3 years, 2 months ago

1/5

ANSWER

Formula of calcium dichloride

Posted by Nimisha Yadav 3 years, 2 months ago

CBSE > Class 11 > Chemistry

3 answers

Sonam Sairawat 3 years, 2 months ago

Cacl2

Shwêtã Árîc 3 years, 2 months ago

CaCl²

Vatika Singal 3 years, 2 months ago

Cacl2

ANSWER

How is carbon-12 exactly related to atomic mass

Posted by Roshni Kosrabe 3 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Gurpreet Malhi 3 years, 1 month ago

1÷12 of c12 is set as a reference quantity

Sonam Sairawat 3 years, 2 months ago

Atomic mass= 1-10 an the elements atomic mass have squared

ANSWER

Atomic mass define

Posted by Xmárty Māyáñk 3 years, 3 months ago

CBSE > Class 11 > Chemistry

2 answers

Gurpreet Malhi 3 years, 1 month ago

Mass of protons + mass of neutrons present in element

Kanika Mittal 3 years, 3 months ago

Magnet brains abhishek sir make a video on all define....you can go through it.....it would really help you

ANSWER

Chapter 01

Posted by Bhawani Dhaka 3 years, 3 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Numerical chapter 3 question number 3

Posted by Anshu Kumar 3 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is amorphous solid

Posted by Saurabh Kumar 3 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Gurpreet Malhi 3 years, 1 month ago

Particles aranged in irregular manner

ANSWER

Do we have to balance the equation required while calculating enthalpy change?

Posted by Nikhitha Muraleedharan 3 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Abhay Mishra 3 years, 2 months ago

Yes

ANSWER

Explain huckel's rule

Posted by Preet Shah 3 years, 4 months ago

CBSE > Class 11 > Chemistry

2 answers

Udit Paliwal 3 years, 3 months ago

Mujhe nhi pata kisi aur se puch jake

Momin Shafi 3 years, 3 months ago

Aslam alikum... HUCKLE RULE HELPS US TO CHECK WHETHER THE GIVEN COMPOUND IS AROMATIC OR NOT ITS FORMULA BY WHICH WE CAN CHECK IS 4n+2 pi electrons THE VALUE OF n Should be natural no. I hope you have understood For further detail CHECK on youtube thanks

ANSWER

What is Geometrical Isomerism

Posted by Rohan Rauniyar 3 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Ishita Shukla 3 years, 4 months ago

isomerism is a property or phenomena of and compound in which the formula of the compound remain same but the structure will be different . thank you

ANSWER

Huckels law in beryllium

Posted by Ushanandini Sivakumar 3 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Dalton law

Posted by Dhiraj Singh 3 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

Subhransu Sahoo 3 years, 2 months ago

Matter has been one of the most important subjects of research for the science enthusiasts. Scientists and philosophers have always tried to simplify things and so was the case with the matter. They wanted to know about the fundamental particles that make matter, their properties, structure etc. This led to the formulation of a number of atomic theories.

Saloni Saini 3 years, 4 months ago

What is Dalton law

ANSWER

Huckel's Rule

Posted by Dhiraj Singh 3 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Describe the theories of acids and bases

Posted by Nitin Singh 3 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Dhiraj Singh 3 years, 5 months ago

Acid- the substance which give proton is known as acid Base- the substance which acpect proton is known as base

ANSWER

How many Sigma and pi bonds are present in toluence

Posted by Mr Thakur Adarsh Singh 3 years, 5 months ago

CBSE > Class 11 > Chemistry

3 answers

Pooja S 3 years, 5 months ago

15 sigma and 3 pi bonds are present in toluence

Amrit Mall 3 years, 5 months ago

15 sigma and 3 pi bond

Gurnoor Kaur 3 years, 5 months ago

15 sigma and 3 pi-bonds

ANSWER

Defined Dalton's law

Posted by Shivank Dev 3 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

Mr Thakur Adarsh Singh 3 years, 5 months ago

Dalton’s law of partial pressures is a gas law which states that the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures exerted by each individual gas in the mixture. For example, the total pressure exerted by a mixture of two gases A and B is equal to the sum of the individual partial pressures exerted by gas A and gas B (as illustrated below).

Gurnoor Kaur 3 years, 5 months ago

the total pressure exerted by mixture of non-reactive gases is equal to the sum of partial pressure of each gas present in the mixture under the same conditionss of T and V.

ANSWER

Why are halides of beryllium polymeric

Posted by Jashan Kaur 3 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Adnan Ashiq 3 years, 5 months ago

Law of chemical combination

ANSWER

Calculate the ph of the solution in which 0.2M NH4cl and 0.1M NH3 are present. The pkb of ammonia solution is 4.75

Posted by Harsh Garg 3 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Write down the equilibrium for the following aA+bB=cCdD

Posted by Rajesh Kanojiya 3 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Anjan Karthi 3 years, 5 months ago

Kc = [A]^a [B]^b / [C]^c [D]^d.

ANSWER

CH3-CH2 free radical disproportionation

Posted by Shivam Shukla 3 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is the name of this gas Co +3H2 and CO+H2O

Posted by Anshika Goyal 3 years, 5 months ago

CBSE > Class 11 > Chemistry

3 answers

Anjan Karthi 3 years, 5 months ago

CO + H2 is called synthetic gas or simply "syngas". Whereas, a mixture of CO and H20 is called water gas.

Shivangi Singh Shivangi Singh 3 years, 5 months ago

Co+H2O is a sink gas

Shivam Shukla 3 years, 5 months ago

CO + H2O is water gas

ANSWER

Which one of the following is most reactive towards nucleophilic addition reaction ? A. Benzaldehyde B. 4 methyl Benzaldehyde C. 4 isopropyl Benzaldehyde D. 4 tert butyl Benzaldehyde Please if someone knows this answer reply as soon as possible ?

Posted by Sanskriti Sharma 3 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Anjan Karthi 3 years, 6 months ago

Benzaldehyde.

Sanskriti Sharma 3 years, 6 months ago

Please someone respond. I will be very greatful to you

ANSWER

Ch2ch2ch2cl react with alcohol KOH in presence of heat

Posted by Pinkeee Maddheshiya 3 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Which one of the following is not extensive state function?

Posted by Nitin Tomar 3 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Draw cis and trans structure for hex-2-ene

Posted by M. Gopi Krishna 3 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

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