find the mole fraction of MgO in forsterite, Mg2SiO4? Answer should be in fractional notation and...

Question

Question

find the mole fraction of MgO in forsterite, Mg2SiO4? Answer should be in fractional notation and decimal notation.

Answer 1

Answer #1

Actually mass of the constituents of Mg2SiO4 should have mentioned.

But it can be done as follows,

2MgO + SiO2 ---------> Mg2SiO4

Therefore, in Mg2SiO4 , two moles of MgO and one mole of SiO2 (silica) are present.

mole fraction of MgO = no.of moles of MgO / total no.of moles

mole fraction of MgO = 2/(2+1) = 0.67

Answer 2

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