Q1. define following with examples (if any)
a)Law of conservation of mass
b)Law of definite proportion
c)valency
d)polyatomic ions
e)mole
f)amu (atomic mass unit)
g)Moler Mass
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2
Answer:
A) Law of conservation of mass states that mass can neither be created nor be destroyed in a chemical reaction.
Eg. Chemical Reaction in closed container.
B) Law of definite proportion states that the compound formed are always in definite proportion.
Eg. H2O
C) Valency - no. of electron found in outermost shell
D) Polyatomic ion - An element having different charges
E) Mole- 12 atoms of 1 carbon atom. =6.022*10^23
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Answer:
Valency....
the valency of an element is the number of hydrogen atoms that can combine with or replace one atoms of the elements. For example oxygen has six valency electrons, but its valency is 2 .
Explanation:
I hope my answer will help you
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