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zhannawk [14.2K]
2 years ago
9

What is Aurora Borealis?​

Chemistry
2 answers:
Leona [35]2 years ago
8 0

Auroras present in polar regions.

seropon [69]2 years ago
4 0

Answer:

the Northern Lights

Explanation:

The northern lights, one of several astronomical phenomena called polar lights (aurora polaris), are shafts or curtains of colored light visible on occasion in the night sky. Aurora borealis

hope this helps

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Do all objects emit electromagnetic waves?
kherson [118]

Answer:

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6 0
3 years ago
Explain the arrangement of particles in solids, liquids and gases.​
Alex787 [66]
Solids are tightly compacted
Liquids are medium
And gases are very spaced and floating around
6 0
3 years ago
You’ve been waiting for the bus and your hands become cold. When you get onto the bus and sit down, you put your hands under you
snow_tiger [21]

Explanation:

The <u>First Law of Thermodynamics</u> states that energy cannot be created or destroyed in an isolated system. In other words, energy can be converted from one form into another, but it cannot be created nor destroyed.

<u>Conduction</u> is the transfer of energy from one molecule to another by direct contact. This transfer occurs when molecules hit against each other, which can take place in solids, liquids, and gases.

When you put your cold hands under your legs to warm your hands up, the heat energy from your legs is being transferred to your hands through conduction. However, since energy cannot be created, there is no extra heat energy that can instantaneously replace the heat created by your legs.

3 0
3 years ago
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What is the molarity of a solution prepared by diluting 43.72 ml of 1.005 M aqueous K2CR2O7 to 500 ml
UNO [17]

Answer:

43.72

Explanation:

that is the answer hope u liked it and I did this already along time ago

3 0
3 years ago
What can be said about the spontaneity of this reaction? cdiamond→cgraphite
anastassius [24]
The gibbs free energy of the reaction of diamond to graphite is equal to -2.90 kJ/mol. The free energy is negative which means that the reaction is spontaneous. Therefore, the forward reaction is favored. Hope this helps. Have a nice day.
7 0
3 years ago
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