A gas containing 'N' number of molecules of a gas having mass of each molecule'm' is in a cubic container having length of each side 'a'. What is the density of gascontained in a cube?
Correct answer: C. Nm/a^3
- A. N/a^2
- B. m/a^3
- C. Nm/a^3
- D. Na^3/m
Explanation
Density is total mass divided by total volume. N molecules of mass m each give a total mass of Nm, and a cube of side a has volume a^3, so the density of the gas is Nm/a^3.
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Thermal equilibrium and heat explain how temperature and energy transfer are related, while molar specific heats describe the heat required by a gas at constant volume or constant pressure. The first law connects heat supplied, work done and change in internal energy, with sign conventions kept distinct from temperature changes.
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