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Vinil7 [7]
3 years ago
15

The Aurora Borealis or northern light occur when solar flares react with the atmosphere near the north poles. The Aurora give of

f colred light because electricity is flowing. Which state of matter must the air be in for the Aurora to occur? A) gas B) liquid C) plasma D) solid
Chemistry
2 answers:
Brrunno [24]3 years ago
8 0

Answer:

C) plasma

Explanation:

Plasma is the state where electrons are stripped allow these gases to conduct electricity.

scoray [572]3 years ago
4 0
Answer: <span>C) plasma
</span><span>
Natural phenomena characterized by colored lights in the sky, is caused by the interaction of charged particles of energy from the solar wind with the magnetic layer of the earth so we have turbulence and multicolored plasma clouds known as auroras arise.</span>
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Calculate the density of a solid that has a volume of 2cm3 and a mass of 3g
katrin2010 [14]

Answer:

The density is 6

Explanation:

p = m × v

p = 3 × 2

p = 6

Hope this helped! :)

8 0
3 years ago
Which processes occurs during the calvin cycle?
sleet_krkn [62]

Answer:

The Calvin cycle has four main steps: carbon fixation, reduction phase, carbohydrate formation, and regeneration phase. Energy to fuel chemical reactions in this sugar-generating process is provided by ATP and NADPH, chemical compounds which contain the energy plants have captured from sunlight.

Explanation:

8 0
4 years ago
What is the product of 392 and 0.13592 with the correct sisignificant digits and proper scientific notation
WITCHER [35]

the correct answer is-

 5.33*10

4 0
3 years ago
Read 2 more answers
If water is added to a 0.70 M solution of CoCl2, what will change?
brilliants [131]

Answer:

- Volume of the solution will increase.

- Molarity will decrease.

Explanation:

Hello,

In this case, for molarity, unit of concentration relating the moles of solute and volume of solution, we have:

M=\frac{n}{V}

Hence, since the given molarity is 0.70M, we first shall infer that by adding more water, that for sure is the solvent, the volume of the solution will increase which will be the first change. Moreover, since the volume and the molarity are in an inversely proportional relationship, as the volume increases the molarity decreases, which is the other change. In addition to the aforementioned statements, the moles of the solute are not modified as just water is added.

Best regards.

3 0
3 years ago
One of these has a negative value for (triangle) H. select the correct one
hichkok12 [17]

Answer:

The methane gas burns

Explanation:

The burning of methane gas is a combustion reaction. Combustion is an exothermic process. For all exothermic processes, ∆H is negative.

Combustion reaction involves the evolution of heat. The energy of reactants is greater than the energy of products hence the excess energy is given off in the form of heat leading to a negative value of the enthalpy of reaction, hence the answer.

8 0
4 years ago
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