Cadmium: Understanding the Concepts of Atomic Mass and Moles

To calculate the number of moles of cadmium in a sample, we can use the formula:

n = mass in grams / atomic mass

Where n represents the number of moles, the mass is the mass of the sample in grams, and the atomic mass is the atomic mass of cadmium.

In the given data, a sample of pure cadmium has a mass of 18.2 grams and the atomic mass of cadmium is 112.4 g/mol. By substituting these values into the formula, we get:

n = 18.2 g / 112.4 g/mol

After calculating the above equation, we find that the number of moles of cadmium in the sample is 0.16 mol.

Therefore, in this case, there are 0.16 moles of cadmium present in the sample.