The mass and volume of each sample differ from the mass and volume of the other samples. Is it possible for each sample to contain 1 mol of each substance?

One mole of a substance contains about 6.02 × 10²³ particles. Different substances can have different masses and volumes for that same number of particles because their particles differ in mass and may take up different amounts of space. So each sample can contain 1 mol even if their masses and volumes differ; the matching choice is 6.02 × 10²³ atoms.

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