1. At the center is a mass concentration ( mascon ), or gravitational high. 2. He and von Frese used gravity measurements by NASA's mass concentration . 3. Also at the center is a mass concentration ( mascon ), or gravitational high. 4. He and Potts used gravity measurements by mass concentration . 5. At the center of the basin is a mass concentration ( mascon ), or gravitational high. 6. The resulting fluorescence image is captured and analyzed to provide the local mass concentrations within the spray. 7. Where is the mass concentration at a reference temperature, is the thermal expansion coefficient of the mixture. 8. I suspect the original question was to calculate the mass concentration of the HCl, with units in g / l. 9. There are alternative explanations for this mass concentration , such as formation by a mantle plume or other large-scale volcanic activity. 10. Thorium and uranium are the most abundant actinides in nature with the respective mass concentrations of 1.6 % and 4 %.