4.5 × 1025 atoms of nickel equal how many moles? a. 27 mol b. 2.7 × 1048 mol c. 0.75 mol d. 75 mol

75 mol

Explanation:

The number of atoms in a mole of substance is 6.023X10²³ [Avagadro's number]

if the given sample of nickel contains 4.5X10²⁵ atoms it means the moles are

moles =

moles =

If we round of the given answer the number of moles = 75 moles

a solute is a substance that is dissolved in the solvent (liquid)

a solvent is a substance that dissolves a solute (solid)

a solution is the mixture of both the solute and solvent forming uniform mixture