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3 years ago

5

Andre heated several solid crystals of a substance called iodine, and the iodine changed directly to a gas. The iodine gas then

cooled and changed into droplets.
Which two processes did the iodine undergo?

A. condensation, then vaporization
B. sublimation, then condensation
C. deposition, then sublimation
D. vaporization, then deposition

2 answers:

Strike441 [17]3 years ago

8 0

The correct choice is

B. sublimation, then condensation

Sublimation is the name of the process where a solid directly converts into gas on heating. on heating solid crystals of iodine directly change into gas. hence this is sublimation.

condensation is the process where gas is converted into liquid on cooling.

here iodine gas is being converted into droplets on reducing the temperature. hence this is condensation.

KonstantinChe [14]3 years ago

8 0

<span>The answer in B)sublimation, then condensation.</span>

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From the question we are told that

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And $KE_e$ is the kinetic energy that the space probe requires to escape the Earth's gravitational pull , this is mathematically represented as

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LUCKY_DIMON [66]

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