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anzhelika [568]
3 years ago
8

Is matter lost when a candle is burned

Chemistry
2 answers:
jeka943 years ago
6 0
No it isnt lost.

hope this helps you
zlopas [31]3 years ago
5 0
No it is redistributed and the state changes to gas and liquid
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A sample of hydrogen gas is collected over water at 25°C. The vapor pressure of water at 25°C is 23.8 mmHg. If the total pressur
Illusion [34]
The partial pressure of the gas will be the total pressure minus the vapor pressure.  523.8-23.8=500mmHg.  This makes sense due to the fact that the idea of partial pressures still works even with vapor pressure since vapor pressure is just the partial pressure of water vapor (23.8mmHg) in the container which is added to the partial pressure of hydrogen gas (500mmHg) to make a total pressure of 523.8mmHg.
I hope this helps.  Let me know in the comments if anything is unclear.
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3 years ago
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Elena L [17]

B, water and ice are the main causes .

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3 years ago
When a liquid freezes and then melts the steps are exothermic?
ludmilkaskok [199]
Generally, a liquid freezes exothermally on cooling and a crystal melts endothermally on heating.

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3 years ago
A sample of iron absorbs 81.0 J of heat, upon which the temperature of the sample increases from 17.9 °C to 32.5 °C.
Inessa [10]

Answer:

Mass = 12.33 g

Explanation:

The expression for the calculation of the enthalpy change of a process is shown below as:-

\Delta H=m\times C\times \Delta T

Where,  

\Delta H  is the enthalpy change

m is the mass

C is the specific heat capacity

\Delta T  is the temperature change

Thus, given that:-

Specific heat = 0.450 J/g°C

\Delta T=32.5-17.9\ ^0C=14.6\ ^0C

\Delta H = 81.0 J

So,  

81.0=m\times 0.450\times 14.6

<u>Mass = 12.33 g</u>

4 0
4 years ago
Identify each description as that of particles of a 1) solid 2) liquid 3) gas __ A. has definite volume but takes the shape of t
Korvikt [17]

Answer:

A.

Liquid

B.

Gas

C.

Gas

D.

Solid

E.

Liquid.

Explanation:

Solids have definite shape and volume and vibrate around a fixed position. Its relative intermolecular forces are very strong which holds its particles in a fixed position.

Liquids takes the shape of the container, that is no definite shape, has fixed volume and its particles move freely but are still attached to each other due to its mildly strong intermolecular forces.

Gases has no shape nor volume but it is highly compressible while its particles move freely in random paths.

5 0
3 years ago
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