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deff fn [24]
2 years ago
9

When a sample of a gas is heated in a sealed, rigid container from 200. K to 400. K, the pressure exerted by the gas is:

Chemistry
1 answer:
gavmur [86]2 years ago
5 0
When a sample of a gas is heated in a sealed, rigid container from 200 degree Kelvin to 400 degree Kelvin, the pressure exerted by the gas is increased by a factor 2. Heating any gas actually increases the volume of the gas within a container. As the temperature of the gas rises, the molecules of the gas start moving faster and start striking the walls of the container in which it is kept with more force. The volume of the container tries to expand to accommodate the fast colliding molecules of the gas.


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We know from the relative amounts of 16O and 18O that global temperatures and global climate have changed over time. Why is it i
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Answer:

In order to take steps by humans for controlling the change in climate.

Explanation:

It is important that scientist find out the change which occurs in the climate with the passage of time by performing experiments and also repeat the experiments in order to verify their findings. Due to these experiments, scientists also find out the reasons behind of climate change which enable us to take steps in preventing the change that occurs in the environment. it is also important for scientists to be able to explain how they know that climate has changed over time in order to explain that he is not assuming or making predictions, he has to provide evidence for his statement which is only be possible through experiments.

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In your own words, explain what the concept of density means—without using the formula.
vladimir1956 [14]

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The amount of mass in a certain volume

Explanation:

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2 years ago
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A liquid that occupies a volume of 4.7 liters has a mass of 5.1 kilograms what is the density of the liquid in kg/L
kotykmax [81]
Divide each by 4.7 to get ur kg/L which is 1.085kg/1L
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Which number represents runoff on the hydrologic cycle diagram?
Olegator [25]

4

Explanation:

The number 4 in the hydrologic cycle depicts surface runoff.

The hydrologic cycle depicts the cyclic movement of water between different earth components.

It shows water in all its phases.

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learn more:

Biogeochemical cycle brainly.com/question/3509510

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Complete the acid-base reaction between butyric acid HC4H7O2 and potassium hydroxide KOH.
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An acid-base reaction or a neutralization reaction is a <u>chemical reaction that occurs between an acid and a base producing a salt and water</u>. The acids and bases can be strong or weak depending on their degree of ionization in water.

Butyric acid is a weak acid and in water it is ionized in the following way, loosing a proton (H+):

HC4H7O2 (aq) ⇆ H+ (aq) + C4H7O2- (aq)

On the other hand, potassium hydroxide is a strong base, so it will be completely ionized in water:

KOH(aq) → K+(aq) + OH-(aq)

Then the <u>net acid-base reaction</u> between butyric acid and KOH is:

HC4H7O2 (aq) + OH- (aq) ⇆ H2O + C4H7O2- (aq)

It is valid to consider only the OH- produced from the ionization of KOH in water since, as mentioned, this molecule is completely ionized. Also, we do not include the K + in the net equation since it is a spectator ion, it does not undergo chemical changes.

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