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andriy [413]
3 years ago
10

When heat, light, or sound is given off or absorbed, is it a chemical change, chemical property, physical change, or physical pr

operty?
Chemistry
1 answer:
Levart [38]3 years ago
6 0

Physical because it does not change the molecular composition.

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Write a paragraph on: how Westfield how the rust in their water formed.
Mariana [72]

Answer:

Students have investigated what's going on in the fictional town of Westfield, they learned that the mysterious reddish-brown substance in the water is actually rust, which formed because of a chemical reaction between the iron pipes and the fertilizer substance in the water.

Explanation:

8 0
3 years ago
Please select the most appropriate answer for the blank: Entropy change is defined only along the path of a(n) ___________ proce
Whitepunk [10]

Entropy change is defined only along the path of an internally reversible process path.

<h3><u>What is Entropy Change </u>?</h3>
  • Entropy is a measure of a thermodynamic system's overall level of disorder or non-uniformity. The thermal energy that a system was unable to use to perform work is known as entropy.
  • Entropy Change is a phenomena that measures how disorder or randomness have changed inside a thermodynamic system.
  • It has to do with how heat or enthalpy is converted during work. More unpredictability in a thermodynamic system indicates high entropy.
  • Entropy is a state function, hence it is independent of the direction that the thermodynamic process takes.
  • The rearranging of atoms and molecules from their initial state causes the change in entropy.
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8 0
1 year ago
Based on these data, what is the average atomic mass of element b? 10.01 10.51 10.81 11.01
Lelechka [254]
The right answer is C. 10.81
5 0
3 years ago
Read 2 more answers
What three factors affect the pressure of a gas in a closed container?
maks197457 [2]
Number of moles of the gas, Temperature and the volume of the gas.
4 0
3 years ago
Read 2 more answers
Refrigerators are usually kept at about 5°C, while room temperature is about 20°C. if you were to take an empty sealed 2 liter s
MakcuM [25]

Answer:

c) No, because Celsius is not an absolute temperature scale

Explanation:

converting  5 oC to kelvin which is the absolute temperature scale gives = 273 + 5 = 278 K

and converting 20 oC to kelvin = 20 + 273 = 293 K

the ratio = 278 / 293 = 0.94 approx 1 not 4

8 0
3 years ago
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