Five calcite, CaCO, (MM 100.085 g/mol), samples of equal mass have a total mass of 11.1 +0.1 g. What is the average mass and absolute uncertainty of calcium in each sample? Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the total mass. 2.22 average mass: mg absolute uncertainty: + 8.8 mg TOOLS x10

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.