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mixas84 [53]
3 years ago
15

Which of the following is the best indication that a chemical change has taken place?

Chemistry
2 answers:
kupik [55]3 years ago
4 0

Answer:

C

Explanation:

It is C because the change is inversible, that means that it is a chemical change.

Ugo [173]3 years ago
3 0
C the change is reversible I think
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________ is the general term for unconsolidated clay, silt, sand, gravel, and mineral fragments deposited by running water.
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Answer:

Alluvium

Explanation:

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silt and clay particles and large sand particles as well as gravel. When alluvial material is consolidated into a lithological unit, or lithified, it is known as an alluvial deposit.

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3 years ago
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hram777 [196]
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4 years ago
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3 years ago
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A gas at 127०C and 10.0 L expands to 20.0 L. What is the new temperature in Celcius? (HINT: You need to convert to Kelvins solve
Snowcat [4.5K]

Answer:

526.85K

Explanation:

Based on Charles's law, the volume of a gas is directly proportional to absolute temperature. The formrula is:

V₁ / T₁ = V₂ / T₂

<em>Where 1 represents the initial state and 2 the final state of the gas</em>

Using the values of the problem:

V₁ = 10.0L

T₁ = 127°C + 273.15K = 400.15K

V₂ = 20.0L

Thus, replacing in the formula:

10.0L / 400.15K = 20.0L / T₂

T₂ = 800K

In Celsius:

800K - 273.15 =<em> 526.85K</em>

<em />

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