2. What is the relative density of oxygen according to carbon monoxide?
3. What is the relative density of oxygen according to Ca(OH)2?
4. What is the relative density of Ca according to
Ca3(PO4)2?
5.Calculate the relative density of H2SO4 according
to air.
6. Calculate the relative density of H3PO4 according
to Na2O.
7. Relative density of gas XH4 according to helium is 4. Determine the molecular mass of gas X.
8.Relative density of gas X according to oxygen is
0. 5. Determine the molecular mass of gas X.

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