If a sample of pure cadmium has a mass of 18.2 grams, how many moles of cadmium are in the sample?

moles = grams/molar mass.

moles=mass/ram

then,
moles=18.2g/112.411=0.1619

therefore 18.2g of pure Cd = 0.1619 moles

To determine the number of moles of cadmium in the sample, we need to use the formula:

Number of moles = Mass of the sample / molar mass

1. Identify the molar mass of cadmium. The molar mass represents the mass of one mole of atoms or molecules. You can find it by looking up the atomic mass of cadmium on the periodic table. The atomic mass of cadmium (Cd) is approximately 112.41 grams/mol.

2. Divide the mass of the sample by the molar mass of cadmium:

Number of moles = 18.2 grams / 112.41 grams/mol

3. Calculate the result:

Number of moles = 0.162 moles

Therefore, there are approximately 0.162 moles of cadmium in the sample.