11. Extra: Initially a sample of ideal gas at 323 K has a volume of 2.59 L and exerts a pressure of 3.67 atm. The gas is allowed to expand to a final volume of 8.89 L via two pathways: a. an isothermal, reversible expansion and b. an isothermal, irreversible free expansion.

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.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.