A mixture of oxygen, nitrogen, and hydrogen gases exerts a total pressure of 0.90 atm at 0°C. The partial pressure of oxygen is 0.21 atm, and the partial pressure of nitrogen is 0.45 atm. What is the partial
pressure of hydrogen?

the role of the microscope world in creating new materials .

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.

50.23 i believe is correct but don't quote me on that.