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malfutka [58]
4 years ago
15

Diffusion occurs faster in gases than in liquids because _____.

Chemistry
2 answers:
djverab [1.8K]4 years ago
7 0

Explanation:

In liquids molecules are somewhat tigthly held together compared to gas molecules. It results decrease in kinetic energy of liquid molecules

While in gases, molecules are arranged in a zigzag pattern and move freely. Hence kinetic energy is more and diffusion rate is also more for gas molecules than liquid molecules.

zalisa [80]4 years ago
6 0
Diffusion occurs faster in a gas than in liquids because in a liquid the molecules are closser together and in a gas they are farther appart
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3 years ago
Compare and contrast Lamarck's and Darwin's theories of change over time.36a. What are the similarities? What are the difference
frosja888 [35]

Answer:

See explanation

Explanation:

Lanark proposed a theory of evolution hinged on use and disuse of body parts. This is a theory that upholds the transfer of acquired traits to offsprings. Darwin's theory of evolution was rather based on natural selection or 'survival of the fittest'. Darwin's theory has more evidence backing it compared to Lamarck's theory. The field of genetics which appeared long after Darwin's death confirmed that inherited traits are indeed passed from parents to offsprings. These inherited traits are usually those that give organisms an edge over others in their environment.

Earthworms are brown and not green or beige because, the brown earthworms have the same colour as the soil and are better enabled to escape from predators. From Darwin's theory, the brown earthworms are the 'fittest' hence they survive in their environment. Lamarck's theory may approach the matter from the point that earthworms move with their bodies on the soil more frequently, hence they 'acquired' the brown colour and passed it on to their offspring.

From the activity, "Hiding in the Background", individual worms spent their entire life cycle in either green or beige colour. Their colour didn't change as a result of the environment where they lived, rather the green earthworms were more in number, not particularly because of any specific changes the earthworms themselves had undergone, but because most of their predators concentrated on eating the beige worms. As a result of this, there were many green worms when the next generation began compared to the number of beige worms. Hence, there were more green earthworms.

8 0
4 years ago
011 10.0 points
Sphinxa [80]

Answer:

-58.3^{\circ}C

Explanation:

The frequency and the wavelength of a wave are related by the equation

v=f\lambda

where

v is the speed

f is the frequency

\lambda is the wavelength

For the sound wave in this problem, we have

f = 634 Hz (frequency)

\lambda=0.47 m (wavelength)

Therefore, the speed of the wave is

v=(634)(0.47)=298 m/s

The speed of sound in air depends on the temperature according to the equation

v=333+0.6 T

where T is the temperature.

In this problem, we know the speed, so we can calculate the temperature:

T=\frac{v-333}{0.6}=\frac{298-333}{0.6}=-58.3^{\circ}C

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3 years ago
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Answer:

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When a liquid absorbs energy and changes to a gas, what takes place?
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D, Evaporation. Like the water cycle..
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