What is mole fraction (X)

What is mole fraction of solute in 1.00 m solution:

What is mole fraction? How is it calculated?

What is the mole fraction of argon in air?

In a binary solution, mole fraction of one component is 0.068. What is the mole fraction of another component?

What is the mole fraction of the solute in 2.5 m aqueous solution?

What is the mole fraction of the solute in 2.5 m aqueous solutions ?

What is the mole fraction of solute in 2.5m aqueous solution .