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Q. Explain about Conservation of Mass?
Conservation of Mass above two centuries ago chemists established a fundamental law called the law of conservation of mass.
This law states that throughout a chemical reaction mass is neither lost nor gained. In other sense all the matter present at the start of a reaction still exists at the end of the reaction. The law of conservation of mass is able to be stated in mathematical form as follows
Mass reactants = Mass products
The free energy change for the formation of oxide of aluminium is highly negative ( -1000 to -1100) so , it can easily reduce any metal oxide abve it easily in ellingham diamgram a
A hydrocarbon z with molecular mass 78 on combustion gave 3.384g of carbon (IV) oxide and 0.693g of water. Determine the molecular formula of Z and draw its structure. [H=1, C=12,
Q. Objective of elements of group 16? You should be able to: • describe the occurrence, extraction and uses of the elements of Group 16, • describe the allotropic forms o
polonium crystallizes in a simple cubic unit cell with an edge length of 3.36A. 1. what is the volume of the unit cell? 2. what is the volume of atom in the unit cell? 3. what i
hardness of borewell water is less than that of seawater
Q. What do you mean by Dative Covalent Bonds?Dative Covalent Bonds Ans. Sometimes both electrons in the shared pair come from one atom. This type of bond is called a dativ
Preparation of benzaldehyde by etard''s reaction
Advantage and disadvantage of westron
For n= 3 energy level, the number of possible orbitals (all kinds) are: (1) 1 (2) 3 (3) 4 (4) 9 Ans: 9
Trace and ultratrace analysis: The accuracy, precision and detection limits of flame AAS depend on how the analyte sample is introduced into the atomiser. We need to transfer
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