Gas ‘X’ possesses twice the density of gas ‘Y’. If gas ‘Y’ has a molecular weight of ‘M’, what will be the molecular weight of gas ‘X’________________?
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Answer: A. 2M
Explanation
Avogadro law states that equal volumes of gases at identical temperature and pressure contain equal numbers of molecules. Gas density is directly proportional to its molecular weight under constant pressure and temperature conditions. Since gas X possesses twice the density of gas Y, its molecular weight must also be twice as large. Molecular weight measures the mass of one mole of a chemical substance expressed in grams per mole. Ideal gas law equations link pressure, volume, temperature, and moles to determine fluid density characteristics. Molar mass comparisons allow scientists to identify unknown gases through relative density measurements.
Option B suggests a lower molecular weight, which contradicts the direct proportionality between gas density and molar mass. Option C assumes equal molecular weights, ignoring the stated fact that gas X has twice the density of gas Y. Option D implies a reverse fraction relationship that violates basic ideal gas density and molecular weight laws.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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