If the ratio of universal gas constant and specific heat capacity at constant volume of a gas is given by 0.67, then the gas is
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Keep in mind the relationship between specific heat capacity and the gas constant when identifying the type of gas. For monoatomic gases, the ratio will be around 0.67.
For monoatomic gases, the ratio of universal gas constant to specific heat capacity at constant volume is approximately 0.67. This ratio is specific for monoatomic gases such as helium, argon, and neon.