Question

Molecular masses KNO3 ,H2O2

Answer 1

MKOLECULAR MASS OF KNO3 
= > 101.1032 g/mol

= > Compound name is potassium nitrate



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MOLECULAR MASS OF H2O2 
= >  34.01468 ± 0.00074 g/mol

= > Compound name is hydrogen peroxide



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Answer 2

Hello friend

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i) KNO3

==> Molecular mass of KNO3

==> (Atomic mass of K) x 1 + (Atomic mass of N) x 1+(Atomic mass of O)x 3

==> (39 x 1 ) +(14 x 1) +(16 x 3)

==>39 + 14 + 48

==> 101


: Molecular mass of KNO3 = 101



ii.) H2O2


==> Molecular mass of H2O2

==> (Atomic mass of H) x 2 + (Atomic mass of O) x 2

==> ( 1 x 2) + (16 x 2)

==> 2 + 32

==> 34


: Molecular mass of H2O2 = 34


Thanks....

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