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svlad2 [7]
3 years ago
6

What causes the change within every twenty-four hours from day to night on Earth?

Chemistry
2 answers:
Maslowich3 years ago
8 0
The change between day and night is caused by the rotation of the Earth on its axis. ... The changing lengths of days and nights depends on where you are on Earth and the time of year. Also, daylight hours are affected by the tilt of the Earth's axis and its path around the sun.
labwork [276]3 years ago
4 0

Answer:

The rotation of earth on it's axis. Daylight is affected on Earth's tilt and its path around the sun.

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Can some one help me out? I can't chose between A or B
Luba_88 [7]

Answer : If an increase in temperature accompanies a reaction, energy is released. Explanation :In thermodynamics, the reaction is considered as a system and the medium in which the reaction occurs which is usually an aqueous medium is considered as its surrounding. When the heat flows from the system to its surrounding, it increases the temperature of surrounding medium because the heat released by the system is absorbed by its surrounding. This is known as exothermic reaction. An exothermic reaction is always accompanied by energy release. On the other hand, when the heat flows from the surrounding towards system, it decreases the temperature of the surrounding medium. This is known as endothermic reaction. From the above discussion we can say that If an increase in temperature accompanies a reaction, energy is released.

Good luck ;)

8 0
3 years ago
Read 2 more answers
In the 1 H NMR spectrum of chloroethane the methylene group is split into a quartet by the α and β nuclear spins of the protons
erastova [34]

Answer:+1/2 and -1/2.

Explanation:the presence of an external magnetic field (B0), two spin states exist, +1/2 and -1/2.

The magnetic moment of the lower energy +1/2 state is aligned with the external field, but that of the higher energy -1/2 spin state is opposed to the external field.

7 0
3 years ago
What is the pressure of the ideal gas when the volume is decreased to 4.0 L and the temperature is increased to 265 K?
jonny [76]
It is an ideal gas therefore we can use the ideal gas equation to solve the problem. The ideal gas equation is expressed as PV = nRT. First, we solve the amount of the gas in moles using the said equation and the first conditions.

(2.0 atm) (5.0 x 10^3 cm^3) = n (82.0575 atm.cm^3/mol.K)(215 K)
n=0.5668 mol

Using the second conditions given, we obtain the new pressure.
P (4.0 x 10^3) = 0.5668 x <span>82.0575 x 265
P= 3.08 atm</span>
8 0
3 years ago
Convert 254 ml in kg
lions [1.4K]
It is 0.0254

Hope that helps
3 0
4 years ago
Which of these is the Bronsted-Lowry acid in this equation?<br> CH3- + H2O --&gt; CH4 + OH-
Juliette [100K]
H2O is the Bronsted-Lowry acid in the forward reaction, donating an H+ to CH3, and CH4 is the Bronsted-Lowry acid in the reverse direction, donating an H+ to OH-.
6 0
3 years ago
Read 2 more answers
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