Question

b)How many moles of Oxygen are present in4.9 gm of H3PO3​

Answer 1

Explanation:

Solution :

Molecular weight of

<br>

mole of

<br>

mole of O

Answer 2

Question:

How many moles of oxygen is present in 4.9 g of H₃PO₃

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Answer and explanation:

Molar mass of H₃PO₃ = 98 g/mol

No. of moles of H₃PO₃ in 4.9g = 4.9/98 = 0.05 moles

1 mole of H₃PO₃ has 3 moles of oxygen (since there are three atoms of oxygen in one molecule of H₃PO₃)

No. of moles of oxygen = 3 x 0.05 = 0.15 moles

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