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a_sh-v [17]
3 years ago
6

Which of the following reactions results in a decrease in entropy? 2SO2 (g) + O2 (g) yields 2SO3 (g) 2NH3 (g) yields N2 (g) + 3H

2 (g) 2H2O2 (aq) yields 2H2O (l) + O2 (g) NaHCO3 (aq) + HCl (aq) yields NaCl (aq) + H2O (l) + CO2 (g)
Chemistry
2 answers:
Marrrta [24]3 years ago
3 0
2SO2 (g) + O2 (g) yields 2SO3 (g)
SashulF [63]3 years ago
3 0

Answer: Option (a) is the correct answer.

Explanation:

Entropy is defined as the degree of randomness of a substance.

For example, gases have more entropy as compared to liquids because molecules a gas have more kinetic energy due to which they move rapidly.

Also, when more number of moles are formed a chemical reaction then it means entropy has increased. But when there are less number of moles formed then it means there is a decrease in entropy.

Thus, we can conclude that the reaction 2SO_{2}(g) + O_{2}(g) \rightarrow 2SO_{3}(g) results in a decrease in entropy as 3 moles is giving 2 moles.

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there is an ice cream shop 6 blocks north of your hotel. how many minutes will it take to walk there and back
Allushta [10]

Answer:

This question is incomplete

Explanation:

This question is incomplete.

However, when all the required data are available, you can use the formula/steps below

Average speed/velocity (m/s) = distance (in metres) ÷ time (in seconds)

Time (in secs) = distance ÷ average speed/velocity

Kindly note that "blocks" is not a standard unit for distance measurement in science, hence the distance (since its a walking distance) must be in metres (or converted to metres if not in metres).

The distance in the formula is the distance from the hotel to the ice cream shop while the average speed is the distance covered per time as s/he walks to the ice cream shop and back. Hence, the answer gotten from the formula above will have to be multiplied by 2 (in order to get the time taken to walk to the ice cream shop and back) because the formula will only provide answer to one trip (time taken to walk to the shop).

After the multiplication mentioned above, the time in seconds should be converted to minutes by dividing the answer in seconds by 60

8 0
3 years ago
Using Le Chatelier’s principle, predict which equilibrium system below decrease the concentration of the reactant (H2CO3) as a r
seropon [69]

Answer:

The correct answer is c add more HCO3- by adding NaHCO3.

Explanation:

The reaction mentioned in the question is carried out by bicarbonate buffer system of our body to maintain the normal acid  base balance.

         Now concentration of the reactant (H2C03) is decreased then NaHCO3 should be added which undergo breakdown to release bicarbonate ions(HCO3-).

        The released bicarbonate ions then reacts with H+ to form Carbonic acid(H2CO3).Thus homeostasis of H2CO3 is maintained.

4 0
3 years ago
Read 2 more answers
How do you do double replacement reactions?
Harman [31]
You have to switch the elements based in if they're metals/nonmetals. so nonmetals switch with each other and metals switch with each other.

AB + CD ---> AC + BD
5 0
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leva [86]
City B is at a higher temperature because as you go higher in altitude the boiling point of water becomes lower.
5 0
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Express in scientific notation. Make sure your answer has the same number of significant figures as the starting value.
frez [133]
The correct response is the second option.
6.1103x10^4. As this was the only answer that had the same number of significant figures as the starting value.
6 0
3 years ago
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