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Setler [38]
3 years ago
14

How is it possible for scientists to know the composition of stars without traveling to the star?

Chemistry
1 answer:
Nataly [62]3 years ago
8 0

Answer:

One of the most common methods used today to determine the composition of stars is <u>spectroscopy</u>.

Explanation:

Spectroscopy is the study of the interaction between matter and electromagnetic radiation as a function of the wavelength or frequency of the radiation.

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Which diagram best illustrates the difference between distance and<br> displacement?
olga nikolaevna [1]

Answer:

B

Explanation:

not sure

5 0
3 years ago
Write the word equation for photosynthesis. A) What are reactants? B) What are the products?
Afina-wow [57]

Answer:

The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll, while the products are glucose (sugar), oxygen and water.

3 0
3 years ago
A balloon with a volume of 0.5L at 293K is cooled to 20K. What is the balloon's new<br> volume?
alina1380 [7]

Answer:

0.03 L

Explanation:

Step 1: Given data

  • Initial volume of the balloon (V₁): 0.5 L
  • Initial temperature of the balloon (T₁): 293 K
  • Final volume of the balloon (V₂): ?
  • Final temperature of the balloon (T₂): 20 K

Step 2: Calculate the final volume of the balloon

The balloon is filled with air. If we assume it behaves as an ideal gas, we can calculate the final volume of the balloon using Charles' law.

V₁/T₁ = V₂/T₂

V₂ = V₁ × T₂/T₁

V₂ = 0.5 L × 20 K/293 K = 0.03 L

3 0
4 years ago
Describe the major types of bodies of water
Alina [70]
<h2>Answer and Explanation </h2>

The body of water means the occurrence of water on earth’s surface. Examples are oceans,  lakes,  seas, ponds, and pools. The major bodies of water are:

  • Pacific ocean is the biggest and deepest of Earth's oceanic divisions. It stretches from the Arctic Ocean in the direction to the Southern Ocean.
  • Atlantic ocean is another giant of the world's oceans.  It includes nearly 20 percent of the Earth's exterior and nearly 29 percent of its water covering space.
  • The Indian Ocean is the third largest Ocean in the world. It is surrounded by Asia, Africa, and Australia.
  • Arctic ocean is the smallest and shallowest of the world's five main oceans.
  • Mediterranean sea is a sea is attached to the Atlantic Ocean.
4 0
4 years ago
Which statement is true with respect to standard reduction potentials?
hichkok12 [17]

Answer:

C). Half-reactions with SRP values greater than zero are spontaneous.

Explanation:

SRPs or Standard Reduction Potentials are characterized as the ability of a probable distinction among the anode and cathode of a usual/standard cell. It aims to examine the capacity of chemicals to reduce themselves.

The third statement asserts <u>a true claim regarding the SRPs(Standard Reduction Potentials) that the 'half-reactions which take place with the SRP possesses the values higher than zero and they are unconstrained</u>.' The other statements are incorrect as they either show the estimation of SRPs more than 0 or display them as being restricted. Thus, <u>option C</u> is the correct answer.

7 0
3 years ago
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