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Pani-rosa [81]
3 years ago
5

You walked outside at lunch time on March 21st and look up in the sky and see the Sun directly overhead. You recall that there w

ill be equal lengths of day and night on this particular day. This occurs because the Sun's rays fall in which direction over the Equator?
Question 10 options:

A.At many different angles to the equator

B.At 24 degree angles to the equator

C.At 45 degree angles to the equator

D.Directly at right angles to the equator
Chemistry
1 answer:
Lisa [10]3 years ago
6 0
A. at many different angles to the equator
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What makes up the human body? (A)many different gases (B)carbon dioxide (D)many cells (C) minerals
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Answer:

<em></em>(B) Carbon Dioxide<em></em>

Explanation:

Roughly 96 percent of the mass of the human body is made up of just four elements: oxygen, carbon, hydrogen and nitrogen, with a lot of that in the form of water. The remaining 4 percent is a sparse sampling of the periodic table of elements

Hope this helps :)

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3 years ago
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The thermochemical equation for the reaction of carbon dioxide with sulfur dioxide is shown below. How can the reaction be descr
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Answer: d. has high activation energy

Activation energy is the energy that a system requires to start a certain process. Also, it <u>is the minimum energy necessary for a given chemical reaction to occur</u>. For a reaction to occur between two molecules, they must collide in the correct orientation and have a minimum amount of energy equal to the activation energy.

As the molecules approach, their electron clouds repel, so energy is required for the collision to occur and therefore the reaction. The activation energy comes from the heat of the system, that is, the translational, vibrational energy, etc. of each molecule. However, if this energy is not enough, the reaction will not be spontaneous.

<u>A reaction between two molecules can be favored by supplying energy to the system.</u> In the case raised in the question, <u>energy equal to 1104 kJ is provided to the system to favor the next reaction </u>

CO2 (g) + 2SO2 (g) → CS2 (g) + 3O2 (g)

<u>Since the energy equal to 1104 kJ is included in the reactants, it can be deduced that it is the energy that is provided to the system for the reaction to occur. </u>However, from the value of this energy it can not be said whether the system is endothermic or exothermic since it is a kinetic variable and the variables of this type do not allow predicting the thermodynamic behavior of a system.

Furthermore, it can be seen that the value of this energy is considerably high, therefore the reaction described has a high activation energy.

3 0
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It's sunny in New York But it is cooL During the first part of the week, we might find this lizard basking in the sun
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Cold blooded animal? it’s a bit vague sorry
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2 years ago
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yuradex [85]

Answer:

2nd order.

Explanation:

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Pleas mark branliest if you are satisfied with the answer. Thanking you in anticipation.

3 0
2 years ago
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Define alkylenes and alkanes​
lawyer [7]

Answer:

Alkylenes: any of the series of unsaturated hydrocarbons containing a triple bond, including acetylene.

alkanes​: Alkanes are organic compounds that consist entirely of single-bonded carbon and hydrogen atoms and lack any other functional groups. Alkanes have the general formula CnH2n+2 and can be subdivided into the following three groups: the linear straight-chain alkanes, branched alkanes, and cycloalkanes.

Explanation:

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