Chemistry, 24.06.2019 06:50 brandyrushing3
How long do balloons stay inflated with helium
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Chemistry, 23.06.2019 02:30, roseemariehunter12
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 .
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How long do balloons stay inflated with helium...
Mathematics, 22.04.2020 02:22
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