A gas is contained in a cylinder with a volume of 3.0 m³ at a pressure of 120,000 Pa. If the volume is increased to 9.0 m³, what will the new pressure be (Pressure in gases (physics only))

The correct answer is 40000 Pa.

Application lens: Apply the rule to the specific sample or situation instead of reciting a broad fact. This question asks: A gas is contained in a cylinder with a volume of 3.0 m³ at a pressure of 120,000 Pa. If the volume is increased to 9.0 m³, what will the new pressure be (Pressure in gases (physics only)). The correct response is 40000 Pa, because density links mass and volume, so the answer must preserve which quantity is being calculated. In Pressure in gases (physics only), the marking point should connect directly to (Physics only) Calculate pressure when volume changes at constant temperature. If the question includes values, the working must keep the appropriate unit and operation; if it is an explanation, it must name the relevant particle behaviour or energy change. This item belongs to Particle model and pressure, so avoid answers that switch to a different quantity, confuse heat with temperature, or describe gas pressure without collisions when collisions are the reason. Checkpoint 547 is distinct because it uses this exact question context and the application lens rather than a generic particle-model sentence.