2 years ago

When gas changes to liquid is it gaining or loosing energy?

2 answers:

4 0

When a gas changes into a liquid, it is called condensation. ... When a liquid changes into gas, it is called evaporation. Phase changes are usually caused by changes in temperature or pressure. As the states of matter change from solid to liquid to gas, respectively, their composition changes as well.

givi [52]2 years ago

4 0

Answer:

Loosing energy

Explanation:

As the particles movement in gas slows down further when it is cooled

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2 years ago

the half life of I -137 is 8.07 days. if 24 grams are left after 40.35 days, how many grams were in the original sample?

Ray Of Light [21]

Answer:

768g

Explanation:

We can use to formula $N(A) = N_0(\frac{1}{2})^\frac{t}{t_{1/2}}$ . Here, N(A) is the final amount. N0 is the initial amount. t is the time elapsed, and $t_{1/2}$ is the half life. Plugging in, we get the answer above.