question: The Avogadro constant is determined to be the ratio between what two factors in the X-ray crystal density method ?
answer: the volume of the unit cell of a crystal , measured by X-ray crystallography , and the molar volume of the substance
turker_answer: The Avogadro constant is determined to be the ratio between the volume of the unit cell of a crystal , measured by X-ray crystallography , and the molar volume of the substance two factors in the X-ray crystal density method .
rule-based: The Avogadro constant is determined to be the ratio between the volume of the unit cell of a crystal , measured by X-ray crystallography , and the molar volume of the substance two factors in the X-ray crystal density method .