Question

How much mass of H2O2 is their in 0.5 moles of 17g.
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Answer 1

Answer:

Number of moles = \frac{Given\:Mass}{Molar\:Mass}

MolarMass

GivenMass

Given mass = 17g (Given in Question)

Q. What is Molar mass?

⇒ Total mass of each atom in that compound i.e. the mass of a given substance divided by the amount of substance.

The base SI unit for molar mass is kg/mol. (Note It's not mole, Its mol here because, In Formula we use mol.)

Molar Mass = H₂O₂ = 1u \times 2 + 16u \times 21u×2+16u×2

Molar mass = 2 + 32 u

Molar mass = 34 u.

Putting the values in formula,

We get ;

Number of moles = \frac{Given\:Mass}{Molar\:Mass}

MolarMass

GivenMass

⇒ Number of moles = \frac{17}{34}

34

17

⇒ Number of moles = \frac{1}{2}

2

1

moles.

or

⇒ Number of moles = 0.5 moles

Answer 2

0.5 moles

Answer. Hence 17 gm of it will have 0.5 moles

What is the mass of one mole of h2o2?

34.0147 g/mol

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