In a mixture of hydrogen and helium gases, the mole fraction of helium is 0.75. If the partial pressure of hydrogen in the mixture is 75 torr, what is the total pressure of the mixture

m=9

step-by-step explanation:

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.