* Grams per cubic centimeter (g/cm³) represents density. It tells you the mass of a substance per unit volume.
* Moles represent the amount of substance. It's a unit that measures the number of particles (atoms, molecules, ions) in a sample.
To convert from density (g/cm³) to moles, you need additional information:
1. Molar Mass: You need to know the molar mass of the substance. The molar mass is the mass of one mole of that substance in grams (g/mol).
Here's how to perform the conversion:
1. Start with the density (g/cm³).
2. Multiply by the volume (cm³) to get the mass (g).
3. Divide the mass (g) by the molar mass (g/mol) to get the number of moles (mol).
Example:
Let's say you have 5 g/cm³ of water (H₂O).
1. Density: 5 g/cm³
2. Assume you have a volume of 1 cm³: 5 g/cm³ * 1 cm³ = 5 g (mass of water)
3. Molar mass of water: 18.015 g/mol
4. Calculate the number of moles: 5 g / 18.015 g/mol = 0.277 moles of water
Therefore, 5 g/cm³ of water corresponds to 0.277 moles of water in a 1 cm³ volume.
