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Molar Mass Formula:
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Molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol). For hydrogen diatomic molecule (H₂), the molar mass is calculated by multiplying the atomic mass of hydrogen by 2.
The calculator uses the molar mass formula:
For hydrogen diatomic molecule (H₂):
Explanation: The molar mass represents the mass of one mole (6.022 × 10²³ molecules) of hydrogen gas.
Details: Molar mass is fundamental in stoichiometric calculations, chemical reactions, gas laws, and determining molecular formulas. It's essential for converting between mass and moles in chemical equations.
Tips: Enter the number of hydrogen atoms (typically 2 for H₂) and the atomic mass of hydrogen (1.008 g/mol). The calculator will compute the molar mass automatically.
Q1: Why is the atomic mass of hydrogen 1.008 and not exactly 1?
A: The atomic mass accounts for the natural abundance of isotopes. Hydrogen has three isotopes: protium (¹H), deuterium (²H), and tritium (³H), with weighted average mass of 1.008 g/mol.
Q2: What is the difference between atomic mass and molar mass?
A: Atomic mass is the mass of a single atom, while molar mass is the mass of one mole (6.022 × 10²³ atoms or molecules) of a substance.
Q3: Why is hydrogen gas diatomic (H₂)?
A: Hydrogen atoms form covalent bonds to achieve stable electron configuration. Two hydrogen atoms share electrons to form H₂ molecule, which is more stable than individual atoms.
Q4: How accurate is the molar mass calculation?
A: The calculation is mathematically exact. Accuracy depends on the precision of the atomic mass value used (1.008 g/mol is the standard value).
Q5: Can this calculator be used for other molecules?
A: Yes, by adjusting the number of atoms and atomic mass values, you can calculate molar mass for any chemical compound.