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Mass Calculation Formula:
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The mass of a compound can be calculated by multiplying the number of moles by the molar mass of the compound. This fundamental chemistry calculation is essential for preparing solutions and conducting experiments.
The calculator uses the simple formula:
Where:
Explanation: The formula directly relates the amount of substance (in moles) to its physical mass through the compound's characteristic molar mass.
Details: Accurate mass calculations are crucial for preparing solutions with precise concentrations, conducting stoichiometric calculations, and ensuring proper reagent quantities in chemical reactions.
Tips: Enter the number of moles and molar mass of the compound. The molar mass field defaults to 256 g/mol but can be adjusted for any compound. All values must be positive numbers.
Q1: What is molar mass?
A: Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It can be calculated by summing the atomic masses of all atoms in a molecule.
Q2: How do I find the molar mass of a compound?
A: Add up the atomic masses of all atoms in the molecular formula. For example, water (H₂O) has molar mass = (2 × 1.008) + 15.999 = 18.015 g/mol.
Q3: Why is the default molar mass 256 g/mol?
A: This is an example value. Many organic compounds and coordination complexes have molar masses in this range, but you should always use the actual molar mass of your compound.
Q4: Can I use this for elements as well as compounds?
A: Yes, the calculation works the same way for elements - just use the atomic mass from the periodic table as the molar mass.
Q5: How precise should my measurements be?
A: Precision depends on your application. For most laboratory work, measuring to 2-4 significant figures is sufficient.