jas4465 jas4465 29-09-2022 Chemistry contestada 3. An unknown element, X, is examined and three isotopes are determined to be present.com 55X = 35.26%2250 57X = 62.89%e 54X = 1.85% What is the atomic mass of the unknown element X according to this data set? 1.85= 0.0185
