Question

the properties of gases depend on...
the amount present in the sample
how the particles are packed
the mass of the sample
rewatch

Explanation:

• The amount of gas (e.g., in moles) affects gas properties like pressure (via the ideal gas law \(PV = nRT\)).
• The mass of the sample is related to the amount (\(n=\frac{m}{M}\), where \(m\) is mass and \(M\) is molar mass), so it also impacts gas behavior.
• How particles are packed (which relates to the state - gas particles are far apart compared to solids/liquids) is a fundamental property of gases itself, not a variable that the properties "depend on" in the sense of these options. For example, gas laws use amount (moles) rather than a measure of particle packing (since it's a constant characteristic of the gas state under normal conditions for the basic laws).

Answer:

the amount present in the sample, the mass of the sample