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Svetradugi [14.3K]
3 years ago
15

A science journal published a report which states that the solar activity has increased in the last two years. Which of the foll

owing events is most likely an effect of the increase in solar activity? (2 points) The auroras have decreased at the North Pole. The auroras have decreased at the South Pole. The auroras are visible at higher regions than normal. The auroras are visible at lower regions than normal.
Chemistry
2 answers:
rodikova [14]3 years ago
6 0
<span>D. The auroras are visible at lower regions than normal.</span>
kobusy [5.1K]3 years ago
6 0

Answer:

option d)

Explanation:

solar activity are the activities which effect the earth weather when there arises storms on the surface of sun.

these storms are

i) sunspot

ii) solar fare

iii) coronal mass injection

these increase in solar activity leads to form auroras at the lower region than the normal.

so, the correct answer is option d)

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Thallium consists of 29.5%Th-203 and 70.5%Th-205. What is the relative atomic mass of thallium?
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0.295 * 203 = 53.885
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3 years ago
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Part A Which acid in each of the following pairs has the stronger conjugate base? Match the words in the left column to the appr
vichka [17]

Answer:

HF

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Explanation:

<em>Which acid in each of the following pairs has the stronger conjugate base?</em>

According to Bronsted-Lowry acid-base theory, <em>the weaker an acid, the stronger its conjugate acid</em>. Especially for weak acids, pKa gives information about the strength of such acid. <em>The higher the pKa, the weaker the acid.</em>

<em />

  • Of the acids HCl or HF, the one with the stronger conjugate base is HF because it is a weak acid.
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  • Of the acids H₂CO₃ or HClO₄, the one with the stronger conjugate base is H₂CO₃ because it is a weak acid.
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6 0
3 years ago
Which describes a way to speed up the collisions between hydrogen and oxygen molecules to produce more water?
rodikova [14]
<span>Equation:2H2(g) + O2(g) → 2H2O(g)
</span><span>
Smaller container means less volume, and the molecules will hit the walls of the container more frequently because there's less space available and the pressure will go up. I guess this would mean that the side with fewer moles would be favored as a result. We count the number of moles on the reactants and products and find that there are fewer moles on the product side, so I guess this would favor the product formation.

</span>
4 0
3 years ago
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