A mixture of H2 and water vapor is present in a closed vessel at 20°C. The total pressure of the system is 755. 0 mmHg. Partial pressure of water vapor at 20°C equals 17. 5 mmHg. What is the partial pressure of H2? mmHg.

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.