What is the mass in grams of each of the following samples?...

What is the mass in grams of each of the following samples?
(a) 0.0015 mol of sodium
(b) 0.0015 mol of lead
(c) 0.0015 mol of diazepam (Valium), $\mathrm{C}_{16} \mathrm{H}_{13} \mathrm{ClN}_{2} \mathrm{O}$

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Key Concepts

Mole Concept

The mole is a counting unit in chemistry that represents an exact number of particles, typically atoms or molecules (approximately 6.022 x 10^23). It provides a bridge between the atomic scale and the macroscopic scale, allowing chemists to translate between amounts of substance in the laboratory and the number of particles involved in a reaction.

Molar Mass

Molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in a chemical formula. This concept allows chemists to convert between the number of moles and the mass of a substance, which is essential in quantitative chemical analysis.

Conversion from Moles to Grams

This concept involves using the relationship: mass = number of moles × molar mass. It enables the calculation of the mass of a given substance when its quantity in moles is known. This conversion is fundamental in stoichiometric calculations in chemical reactions and laboratory measurements.

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