Absolute zero is defined as the temperture at which

Options

A. pressure becomes zero
B. volume become zero
C. mass become zero
D. density become zero .

Explanation

**Step-by-Step Solution:**

1. **Understanding Absolute Zero**: Absolute zero is a theoretical temperature that is considered to be the lowest possible temperature. It is defined as 0 Kelvin (K), which is equivalent to -273.15 degrees Celsius (°C) or -459.67 degrees Fahrenheit (°F).

2. **Behavior of Matter at Absolute Zero**: At absolute zero, the motion of atoms theoretically comes to a complete stop. This means that the kinetic energy of the particles is minimized.

3. **Volume of Gases**: According to the ideal gas law (PV=nRT), if the temperature (T) approaches absolute zero, the volume (V) of an ideal gas approaches zero, assuming pressure (P) and the number of moles (n) remain constant.

4. **Conclusion**: Therefore, absolute zero is defined as the temperature at which the volume of an ideal gas becomes zero, indicating that the particles have minimal energy and motion.

**Final Answer**: Absolute zero is defined as the temperature at which the volume becomes zero.

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