Hello student ,

Generally 1 mole of a substance contains Avogadro Number of molecules that is 6.022 × 10^23 therefore

1. 28g of N2 = 1 mole = 6.022×10^23 molecules.                             Therefore 7g of N2 = 7/28 = 0.25 mole =  6.022× 10^23/4 = 1.505×10^23 molecules .
2. 2g of H2 = 1

A material at a certain temperature does not have all of its particles at the same energy. In the basic definition of the word, "temperature" is the average random motional (kinetic) energy of the particles of a material. (Thermodynamics gives a broader definition to temperature, but we don't need this

Hello candidate,

Chemistry in everyday life, polymers, and biomolecules are most important for the JEE Mains examination and the syllabus for from this chapter does not come very frequently in the JEE advanced examination. So, it's better that you focus on the JEE Mains examination perspective in order for preparing

Hey student,

9 How many hydrogen bonded water molecules are associated in CuSO4. 5H2O ? Solution Only one water molecule, which is outside the coordination sphere, is hydrogen bonded. The other four molecules of water are coordinated with copper cation.

All the best student,

Hope this helps you.

Hi

A Molecule of a substance is defined as the smallest possible unit of a substance having all the physical and chemical properties of the substance. It is usually formed by two or more atoms coming togather to form a smallest identifiable unit

This molecule are formed when atoms come

hello Zarikul hoque,

hope you are doing well now coming back to your question,

As we know that in general, a non-linear molecule with N atoms has 3N – 6 normal modes of vibration, but a linear molecule has 3N – 5 modes, because rotation about the molecular axis cannot

hello rohit

As we know that for a molecule, molecular weight in grams is equal to the Avogadro number and for transforming between moles and grams, we could use the molar mass of the substance. Avogadro’s number can be expressed as the number of elementary particles such as molecules, atoms,

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Here you will be able to download the question paper along with the answer key/scheme for free in a pdf format.You can practice these papers and find questions related to bio molecules from them.

hello Sr,

Hope you are doing well ,Now to answer your question

As we know that Molar mass of ammonia is 17g

17g ammonia contains 6.022×10^23 number of ammonia molecules due to this 4.25 g ammonia will contain,

(6.022×10^23×4.25)/17 = 1.5×10^23

number of ammonia molecules.

hope this will help you