Which temperature change would cause the pressure of a gas to double if its volume remains the same? A. Increasing from 20°C to 40°C
B. Increasing from 20°C to 200°C
O C. Decreasing from 400°C to 200°C
D. Increasing from 200 K to 400 K

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.

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Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .