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Alborosie
3 years ago
10

Read everything and do everything for brainliest!

Chemistry
1 answer:
andrew-mc [135]3 years ago
4 0

Answer:

a lot of rain

Explanation:

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a helium balloon has a volume of 2.95 liters at 25 c. the volume of the ballon decreased to 2.25 l after it is placed outside on
OleMash [197]

Answer:

The outside temperature is -45.8°C

Explanation:

When a gas keeps on constant its moles and its pressure, we can assume that volume will be increased or decreased as the T° (absolute T° in K).

V1 / T1 = V2 / T2

2.95L/298K = 2.25L / T2

(2.95L/298K ) . T2 = 2.25L

T2 = 2.25L . 298K / 2.95L

T2 = 227.2K

T°K - 273 = T°C

227.2K - 273 = -45.8°C

3 0
3 years ago
Which of these statements best answers the question: What is art?
Anna11 [10]

Answer:

You didn't provide any statements. If it is an option, art is a form of expression. Something created from imagination that expresses the thoughts and emotions of the artist.

8 0
3 years ago
A certain alkyl halide is reacted with OH- to form an alcohol. The alkyl halide is optically active but the product(s) is/are op
Snowcat [4.5K]

Answer:

a. 3-brumo - 3-methylhexane

Explanation:

Alkyl Halides can undergo substitution reactions. Nucleophiles are electron rich species and has negative charge while Electrophiles are electron deficient species which carry positive charge. Alkyl halide which have polar carbon atom are electrophiles.

8 0
3 years ago
Please choose the correct sequence that describes the excitement of an atom.
Angelina_Jolie [31]
Answer: A because it’s correct
7 0
3 years ago
Sublimation and boiling both happen at the surface of the substance. <br> a. True <br> b. False
Burka [1]
This statement is: False

Boiling is vaporization that occurs both below and at the surface of the liquid.
However, evaporation happens at the surface of the substance.

So, if you need to correct this statement, the correction would be:
Sublimation and evaporation happen at the surface of the substance.
7 0
3 years ago
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