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Lostsunrise [7]
3 years ago
6

Is it called when a substance enters a gaseous phase without boiling?

Chemistry
2 answers:
Helen [10]3 years ago
3 0

Answer:

its called sublimation

algol133 years ago
3 0

Answer:

Boiling is a phase transition from the liquid phase to the gas phase that ... in what is called the “escaping tendency” of the molecules from the phase. ... into the gas phase from a solid or liquid by placing the substance in a closed, ... Gradually, Pw will rise as molecules escape from the liquid phase and enter the vapor phase.

Explanation:

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1) their atomic numbers

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This chemical equation represents the burning of methane, but the equation is incomplete. What is the missing coefficient in bot
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3 years ago
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How much heat is released as the temperature of 25.2 grams of iron is decreased from 72.1°C to 9.8°C? The specific heat of iron
prisoha [69]

Answer:

Q=-697.06\ J

Negative sign says that release of heat.

Explanation:

The expression for the calculation of the heat released or absorbed of a process is shown below as:-

Q=m\times C\times \Delta T

Where,  

\Delta H  is the heat released or absorbed

m is the mass

C is the specific heat capacity

\Delta T  is the temperature change

Thus, given that:-

Mass = 25.2 g

Specific heat = 0.444 J/g°C

\Delta T=9.8-72.1\ ^0C=-62.3\ ^0C

So,  

Q=25.2\times 0.444\times -62.3\ J=-697.06\ J

Negative sign says that release of heat.

8 0
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A student uses a dye to change the colour of his tee-shirt. he fills a metal bucket with water. When the bucket is heated, what
Tanya [424]

Answer:

The particles begin to vibrate faster and more.

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Adding heat to matter increases the energy, thus creating more movement. Eventually, the bucket will melt, turning to a liquid. While it is a sold, it still has particle movement, just not enough to break volume or shape.

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