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telo118 [61]
3 years ago
8

Who can witness a lunar eclipse?

Chemistry
2 answers:
larisa86 [58]3 years ago
5 0

Answer:

all people on the night side of Earth

Explanation:

<em>Lunar eclipse, also known as eclipse of the moon is a phenomenon that takes place when the sun, the earth and the moon are closely aligned. The earth comes in-between the moon and the sun, blocking the rays of the sun from reaching the moon in the process.</em>

The eclipse which can only happen on a night with full moon makes the moon to appear faded or appear or reddish in color (blood moon).

Lunar eclipse can be viewed by anyone that is on the night side of the earth when the event occur, although viewing it requires some efforts

inessss [21]3 years ago
3 0
<span>people in a specific area of Earth’s surface covered by the Sun’s shadow </span>
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______ reactions release energy.
Igoryamba
Combustion reactions release energy in the form of heat. 
        Hope this helps and tell me if you need more help!
4 0
3 years ago
Draw all four products obtained when 2-ethyl-3-methyl-1,3-cyclohexadiene is treated with HBr at room temperature and show the me
LenKa [72]

Answer:

See explanation below

Explanation:

In this case we have reaction of addition. In this case a diene reacting with an acid as HBr. This reaction is known as Hydrohalogenation, and, as we have a diene, this kind of reaction can be done as 1,4 addition. Which means that the reaction will be undergoing with an adition in the carbon 1, and carbon 4.

At room temperature we can expect that this reaction can be done in thermodynamic conditions, Now, as the problem states that is forming 4 products, we can expect products of a 1,2 addition too. This product can be formed if the reaction is taking place in the most stable carbocation, and then, by resonance, we can expect the 1,4 product too.

Now, the HBr can be attacked by the double bond of the first position, giving two possible products or by the double bond of the third position giving the other two products. These products are all possible, obviously the most stable will be the major of all of them, but the other three are perfectly possible. One product is formed without doing much, and the other by resonance. Same happens with the other double bond.

In the picture below, you have the mechanism for all the 4 products.

Hope this helps

5 0
3 years ago
Why does opening the air valve of a tire at a constant temperature decrease the pressure
Shtirlitz [24]
The number of molecules decrease
8 0
3 years ago
Nitrification happens in the
Andru [333]

Answer:

This process naturally occurs in the environment, where it is carried out by specialized bacteria.

Explanation:

4 0
3 years ago
Read 2 more answers
SHOW WORK AND INCLUDE UNITS
Ber [7]

Answer:

36365.4 Joules

Explanation:

The quantity of Heat Energy (Q) released on cooling a heated substance depends on its Mass (M), specific heat capacity (C), and change in temperature (Φ)

Thus, Q = MCΦ

Since, M = 45.4 g

C = 3.56 J/g°C,

Φ = 250°C - 25°C = 225°C

Q = 45.4g x 3.56J/g°C x 225°C

Q= 36365.4 Joules

Thus, 36365.4 Joules of heat energy is released when the lithium is cooled.

6 0
3 years ago
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