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lara [203]
3 years ago
14

Julie finds a snail on the sidewalk and wants to know whether or not the snail moves throughout the day. She places a

Chemistry
2 answers:
jasenka [17]3 years ago
4 0

Answer:

d

Explanation:

AURORKA [14]3 years ago
3 0
Acting as a reference point for detecting motion
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How to do balance chemical equiations
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https://www.khanacademy.org/science/chemistry/chemical-reactions-stoichiome/balancing-chemical-equat...

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A 2.4L balloon filled with helium at room temperature 25oC is put into liquid nitrogen
Stels [109]

Answer:

V₂ = 0.62 L

Explanation:

Given data:

Initial volume = 2.4 L

Initial temperature = 25°C

Final temperature = -196°C

Final volume = ?

Solution:

Initial temperature = 25°C (25+273 = 298 K)

Final temperature = -196°C ( -196+273 = 77 K)

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 2.4 L × 77 K / 298 k

V₂ = 184.8 L.K / 298 K

V₂ = 0.62 L

5 0
2 years ago
Why can more water vapor (water molecules that are in the gas state of matter) be present in warm air than in cold air?
Bond [772]

Answer:

Because warm air is less dense

Explanation:

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