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Feliz [49]
3 years ago
14

Why is the sun up sometimes but not other times?

Chemistry
1 answer:
MatroZZZ [7]3 years ago
6 0

Answer: The Sun appears to move across the sky because the Earth rotates on its axis. ... When where you are is pointed toward the Sun, it is day. Then the Earth rotates you away from the Sun, and it is night.

Explanation:

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nevsk [136]

Answer:

running water and glaciers

7 0
3 years ago
The elements in valence group 5 have how many valence electrons?​
Viefleur [7K]

Answer:

5 valence electron

Explanation:

It is because the group number is equal to the valence electron.

6 0
3 years ago
Looking at the structure of caffeine, explain why it is very soluble in a non-polar solvent and a little soluble in water.
olasank [31]
Because in caffeine the don’t use that much soluble in caffeine bis cause then there would be no flavor of caffeine but in water they do so the water doesn’t affect other to stop the solvent from getting stuck.
7 0
3 years ago
What did the 15th amendment do
Alisiya [41]

The 15th Amendment to the Constitution granted African American men the right to vote by declaring that the "right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of race, color, or previous condition of servitude."

6 0
3 years ago
Part A. Two containers, one at 305 K and the other at 295 K, are placed in contact with each other. 1. 1 J of heat flows from th
posledela

Answer:

0.00011 JK.

The process does NOT violate the second law of thermodynamics

Explanation:

The following parameters are given which are going to help in solving for the change in entropy of the system. The term "entropy'' simply means the degree of disorderliness of a system.

=> The temperature of container A = 305 K, the temperature of container B = 295 K and the amount of heat generated when the containers are placed in contact with each other = 1. 1 J.

The change in entropy of the hot container = -(1/305) = - 0.00328 J/K.

The change in entropy of the cold container = 1/295 = 0.00339 J/K.

Therefore, the change in the entropy of the system = - 0.00328 J/K + 0.00339 J/K = 0.00011 JK.

Note that the change in entropy of the system gives a positive value. Hence, this process does not violate the second law of thermodynamics.

The process does NOT violate the second law of thermodynamics.

7 0
3 years ago
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