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What phase changes happen to dry ice?
Sublimation: from solid directly to gas.
What are three compounds containing promethium?
Promethium salts, oxides, and halides are common compounds of promethium. Promethium oxide (Pm2O3) and promethium chloride (PmCl3) are among the compounds that can be formed with promethium.
What are phase changes?
its physical changes
What is the half life of promethium?
Promethium 145 has a half life of 17.7 years. Promethium 146 has a half life of 5.53 years. Promethium 147 has a half life of o.22 years.
How does promethium smell like?
Promethium does not occur naturally on earth, but as a by-product of uranium fission. It is very radioactive and its salts have a pinkish or reddish color. Promethium colors its surrounding air with a pale blue-green light.
What is the normal phase of the element promethium?
Promethium is a rare earth metal that is a solid at room temperature, making its normal phase solid.
What is the normal phase of promethium?
Promethium is typically a solid at room temperature, specifically a metal.
What is promethium phase at room temperature?
Promethium does not occur naturally on Earth and is primarily synthetic. At room temperature, promethium is expected to be a solid metal.
What phase changes happen to dry ice?
Sublimation: from solid directly to gas.
What would happen if the beaker is left uncovered during the development of the chromatogram?
Bad things happen. The mobile phase evaporates and thus it's composition changes. The vapor phase above the chromatogram is not saturated or at equilibrium, and this affects the movement of the sample on the solid phase.
What substances are in promethium bromide?
Promethium bromide contain promethium and bromine.
What happen to the temperature of a substance during a phase change?
The temperature* remains unchanged. * The heat (energy) content changes.
Is Promethium magetic?
Yes, Promethium is a radioactive element that is paramagnetic, meaning it is weakly attracted to magnetic fields.
Is promethium flamable?
Promethium is not flammable.
Why phase changes are reversible'?
Phase changes are accompanied with optical contrast and therefore the feasibility of phase.
What are three compounds containing promethium?
Promethium salts, oxides, and halides are common compounds of promethium. Promethium oxide (Pm2O3) and promethium chloride (PmCl3) are among the compounds that can be formed with promethium.
Is promethium a solid?
Yes. Promethium is a solid.
