Class 9 CBSE Chemistry | Atoms And Molecules - One Shot Revision | Xylem Class 9 CBSE

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hw
Molecular mass of:-
1)CaCl2= 111u
2)CaCO3=100u
)

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1:05:49 / 1:18:45

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35:52

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Calcium chloride :- 110
Calcium carbonate :- 100

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CaCl2 = 111u
CaCo3 = 100u

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Formula unit mass, molecular mass unit = atomic no1+atomic no2

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molecular mass = CaCl2 = 40+35x2 = 40 +70=110u
= CaCO3 = 40 + 12 + 16x3 = 52 + 48 =100u

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CaCl2 = 40+2x35.5 = 40+71=111u

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How to write electronic configuration of these elements

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Hw and
Molecular mass of:-
1)CaCl2= 111u
2)CaCO3=100u

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56:17

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Cacl2=110u
CaCO3=100u

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