CHEMISTRY HIGH SCHOOL

Which biogeochemical cycle has the least activity because the essential element is mostly stored in rock?

Answers

Answer 1
Answer: The biogeochemical cycle that has the least activity because its essential element is mostly stored in rock is the phosphorus cycle. Phosphorus, unlike the other essential elements, is commonly found as a solid. This is why the atmosphere does not play a role in this cycle. Instead, phosphorus remains on land, and is mostly found in rocks and minerals.
Answer 2
Answer:

Answer:

Phosphorus

Explanation:

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Why are alloys preferable at times?

Answers

Alloys are preferable at times because they offer interesting properties than pure metal. Alloys are made in order to modify or enhance properties, especially mechanical properties. Examples are stainless steel, brass and wrought iron.

Katy works at a pet store, and is in charge of tracking the cat food supply for the morning, afternoon, and evening shifts. There are currently six cats at their store, and each cat had full food bowls during the morning and afternoon shifts, throughout the entire shift. Each day, the evening shift person replenished the food bowls at the end of their shift. What is the pattern Katy could note from this data?

Answers

Because the cats all have full bowls in the morning and afternoon, Katy can assume that the cats do not eat in the morning or afternoon. The bowls are replenished in the evening, which suggests that they become empty in the evening, which suggests that the pattern is that the cats eat in the evening.

Cat's tend to eat more in the afternoon than in the morning and night.

Pierce conducts an experiment in which waves collide in a way that the energy increases, which means that has occurred

Answers

Answer:

It means the waves collides and constructive interference occurred.

Explanation:

If the two waves coming from the opposite direction collide with each other, there are two way of their interference.

  • Constructive interference: An interference which results in the increase in energy. And it is when crust of a wave comes on the crust of second wave.
  • Destructive interference: An interference which results in decrease in energy of the resulting wave and colliding waves cancel the result of each other.

Hence in experiment there will be constructive interference.

Answer:

C.

Explanation:

I took the test!

HELP!!!! The freezing of methane is an exothermic change. What best describes the temperature conditions that are likely to make this a spontaneous change? Any temperature, because entropy increases during freezing. Any temperature, because entropy decreases during freezing. Low temperature only, because entropy decreases during freezing. High temperature only, because entropy increases during freezing.

Answers

Answer: The correct statement is low temperature only, because entropy decreases during freezing.

Explanation:

The relationship between Gibb's free energy, enthalpy, entropy and temperature is given by the equation:

\Delta G=\Delta H-T\Delta S

Where,

\Delta G = change in Gibb's free energy

\Delta H = change in enthalpy

T = temperature

\Delta S = change in entropy

It is given that freezing of methane is taking place, which means that entropy is decreasing and Delta S is becoming negative. It is also given that the reaction is an exothermic reaction, this means that the \Delta H is also negative.

For a reaction to be spontaneous, \Delta G must be negative.

-ve=-ve-[T(-ve)]\n\n-ve=-ve+T

From above equations, it is visible that \Delta G will be negative only when the temperature will be low.

Hence, the correct statement is low temperature only, because entropy decreases during freezing.

Answer:

Low temperature only, because entropy decreases during freezing.

Explanation:

Which compound is a member of the same homologous series as C3H8?(1) CH4 (3) C5H8
(2) C4H8 (4) C6H10

Answers

The homologous series to which C3H8 belongs are the alkanes hence it is in the same group as CH4.

What is a homologous series?

The term homologous  series refers to a family of molecules. The molecules in this family have the same functional group and differ from each other by -CH2-group.

The homologous series to which C3H8 belongs are the alkanes hence it is in the same group as CH4.

Learn more about homologous series:brainly.com/question/14953274

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CH4 is the compound of a member of the same homologous series as C3H8.

What happens to the pressure and the molecules inside a football that is being pumped up?

Answers

The pressure increase, and the molecules collide with the football's inners surface
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Yall-It's summer, so likely there's no one on here but like-I got bored and decided to play the password game-Rule 18 is: The elements in your password must have atomic numbers that add up to 200.The current elements I have are: Ne, V, W, ReI don't know what any of this is- I failed chem but please help ;-;Also ignore my username, I haven't used this account in like two years-