L05 | आप सीख रहे है रासायनिक अभिक्रियाएँ | Haloalkane | 12th Chemistry | by vikram sir | Doubtnut

D तथा L अभिविन्यास |कुछ प्रमुख मोनोसैकेराइड |ग्लूकोस या द्राक्ष-शर्करा या डेक्सट्रोज (C6H12O6)|ग्लूकोस की रासायनिक अभिक्रियाएँ |ग्लूकोस की संरचना

In chemistry, 'mole' is an essential tool for the chemical calculations. It is a basic SI unit adopted by the 14^(th) general conference on weights and measurements in 1971. A mole contains as many elementary particles as the number of atoms present in 12 g of ""^(12)C . 1 mole of a gas at STP occupies 22.4 litre volume. Molar volume of solids and liquids is not definite. Molar mass of a substance is also called gram-atomic mass or gram molecular mass. The virtual meaning of mole is plenty, heap or the collection of large numbers. 1 mole of a substance contains 6.022 xx 10^(23) elementary particles like atom or molecule. Atomic mass unit (amu) is the unit of atomic mass, e.g., atomic mass of single carbon is 12 amu. XL N_(2) , gas at STP contains 3xx10^(22) molecules. The number of molecules in x L ozone at STP will be

26 जनवरी - Happy Republic Day ? 12th बोर्ड 2024 के सभी छात्रों के लिए बहुत बड़ी खुशखबरी By Vikram Sir