Final answer:
To convert moles to grams, multiply the number of moles by the substance's molar mass. The molar mass is specific to each substance and can be found on the periodic table. Mole-mass calculations are fundamental in chemistry for laboratory measurements and converting quantities in chemical equations.
Step-by-step explanation:
To convert moles of a substance to mass in grams, you need to know the molar mass of the substance, which you can find on the periodic table. The molar mass is defined as the mass of one mole of representative particles, such as atoms or molecules, of that substance. The formula for conversion is straightforward: Mass (g) = Number of moles × Molar mass (g/mol). For instance, if you have 2 moles of water (H₂O) with a molar mass of approximately 18 g/mol, the mass in grams would be 2 moles × 18 g/mol = 36 g. This intricacy, known as mole-mass calculation, is quite useful in laboratory settings where precise measurements are essential.
When dealing with a chemical equation and wanting to perform mole-to-mass conversion, you must use the mole ratio provided by the balanced equation to determine the moles of the unknown substance. You then convert these moles to grams using the molar mass of that particular substance, ensuring all units cancel out and leaving you with the mass in grams of the desired substance.