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Alexeev081 [22]
3 years ago
14

By what method do we measure the distance to objects that are a few thousand light-years away?

Chemistry
2 answers:
Zigmanuir [339]3 years ago
8 0

Answer:

i believe the answer to your question is parallax or parsecs. im sorry im not very specific in this!

Explanation:

Wewaii [24]3 years ago
8 0
First, a dirty little secret: scientists don't actually measure astronomical distances in light years. Rather, they measure them in a unit called the Parsecs
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What is some fun facts about the person who started Sand Storms? What can be the worst in a Sand Storms? If you were caught in o
Dahasolnce [82]

Answer:

The clouds that carry the dust can be huge, and miles long. They can rise to be over 305m. They also have wind speeds of at least 40 kilometers.Sandstorms can happen really quickly.

Explanation:

Sandstorms carry with them large volumes of sand and dust. But more than sand, they also carry with them virus spores that interact with the atmosphere. Because of this, I can contact any disease from it.

Other immediate effects of sandstorms to me include the worsening of lung functions if I have asthma. Due to inhalation of large amounts of dust, dust pneumonia could be developed. Diseases such as silicosis could also develop from prolonged exposure to sand. If left untreated, it will eventually lead to asphyxiation and lung cancer. The eyes could also be affected by the particles. Keratoconjunctivitis sicca, or dry eyes, could develop which could lead to blindness. My exposure to sandstorms could have adverse effects on my circulatory system. So I could either die immediately or fall terrible sick it depend on my health issue.

7 0
3 years ago
If 3.0 liters of 0.50 m nacl (aq) is mixed with 9.0 liters of 0.2777 m nacl (aq), what is the final concentration of the resulti
Svetradugi [14.3K]
First, we shall calculate the total number of moles present in the final solution.
Number of moles in 0.50 m NaCl = molarity * volume = 0.50 * 3.0 = 1.5 moles.
Number of moles in 0.2777m NaCl = molarity * volume = 0.2777 * 9.0 = 0.24993 moles
Total number of moles = 1.5 + 0.24993 = 1.74993 moles

Second, we shall calculate the total volume of the final solution.
Total volume = 3 + 9 = 12 litres.

The molarity = total number of moles / total volume = 1.74993 / 12 = 0.1458 m
3 0
3 years ago
Of the groups given, which are the least chemically reactive?
AfilCa [17]

Answer:

Group 8A

Explanation:

This is because the elements in Group 8A is stable, what I mean is this elements have the maximum number of electrons in there last orbit so they dont need to form any compund with any other element in the periodic table.

<em>HOPE</em><em> </em><em>THIS</em><em> </em><em>WILL</em><em> </em><em>HELP YOU</em><em /><em>❤️</em>

7 0
2 years ago
(6.02×10^23)(8.65×10^4)
Katen [24]
I believe the answer to this is 5.2073*10^28
4 0
3 years ago
HELP? What is the major difference between an ion and a dipole?
Anastasy [175]

Answer:

Key differences between ion/ion and ion/dipole interactions

Ion-ion interactions fall off slower than ion-dipole. Tripling the distance between two ions reduces the energy by 1/3, while tripling the distance between the ion and a dipole reduces it by 1/9

Letter answer: B

Explanation:

8 0
3 years ago
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