Densities of carbon dioxide plus methane mixtures from 225 K to 350 K at pressures up to 35 MPa
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This paper reports PVT measurements for five gravimetrically prepared CO2 + CH4 mixtures. A continuously-weighed, high-pressure pycnometer was used to measure densities at temperatures from 225 K to 350 K in 25 K increments and pressures to 35 MPa with one set of measurements to 69 MPa. A detailed error analysis indicates that the accuracy of the densities is better than 0.1%.