Flowchart on Atoms and Molecules class 9
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Notes of Chemistry for Class 9
CHAPTER 3 ATOMS AND MOLECULES
1.Laws of Chemical Combination
law of chemical combination
Verification of “Law of Conservation of mass”
A solution of sodium chloride and silver nitrate are taken separately in the two limbs of an 'H' shaped tube.
The tube is sealed and weighed precisely. The two reactants are made to react by inverting the tube. The
following reaction takes place.
AgNO3(aq) + NaCl (aq) • AgCl (s) + NaNO3 (aq)
The whole tube is kept undisturbed for sometime so that the reaction is complete.
When the tube is weighed again it is observed that:
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