1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lina2011 [118]
3 years ago
5

What is a star's absolute brightness? pls help​

Chemistry
1 answer:
Zanzabum3 years ago
4 0

Answer:

<h3>absolute brightness: The apparent brightness a star would have if it were placed at a standard distance of 10 parsecs from Earth.</h3>
You might be interested in
The ph of a solution is 8.05 ± 0.02. "what is the concentration of h in the solution and its absolute error
sp2606 [1]

pH is equivalent to the negative log of the concentration of H in molarity, that is:

pH = - log [H]

so the concentration is:

8.05 = - log [H]

[H] = 8.91 x 10^-9 M

the absolute error is:

8.07 = - log [H’]

[H’] = 8.51 x 10^-9 M

absolute error = 8.91 x 10^-9 M - 8.51 x 10^-9 M = 0.4 x 10^-9 M

 

Therefore:

<span>8.91 x 10^-9 M ± 0.4 x 10^-9 M</span>

7 0
3 years ago
A 3.0 L sample of helium gas is stored in a rigid, sealed container at 25 °C and
diamong [38]

Answer:

C. 2.9 atm

Explanation:

- Use combined gas law formula and rearrange it.

- Convert C to K.

- Hope that helped! Please let me know if you need a further explanation.

5 0
3 years ago
Lunar phases include the waxing and waning phases. The waxing phases have light on the _______ side of the moon as we look at it
Anna71 [15]

Answer:

Explanation:

The light is on the right side of the moon from Earth's perspective. The light will never be on the bottom or top. Its either waxing or waning; left or right

4 0
3 years ago
The number of __________ must be equal on both sides of the ___________________. Reactions must be balanced because all things i
OLga [1]
What are the option
3 0
3 years ago
Desalination is the process of converting sea water into drinking water. Older processes used a desalination method to desalinat
Kay [80]

Answer:

From the diagram, the water is being boiled. This process vaporises the water in the vessel leaving salt crystals behind.

Since the water is needed in liquid form, the cold water at the top of the set-up

condenses the vapor so it can be used.

3 0
4 years ago
Read 2 more answers
Other questions:
  • How do nonmetals form bonds
    11·1 answer
  • A new synthetic element has two isotopes. If the first isotope has a mass of 259.98 amu and a percent abundance of 43%, what is
    10·1 answer
  • 1) What is air pressure? (4 Points)
    6·2 answers
  • If a plane travels at a speed of 600 km/h, how long<br> would it take to travel a distance of 300 km
    7·2 answers
  • Convert 1 kilometer to hectometers​
    8·2 answers
  • Which statement about the electron-cloud model is true? It is the currently accepted atomic model. It can easily be replaced by
    10·2 answers
  • During a chemical reaction, the amount of energy
    6·1 answer
  • Different isotopes of the same element must have a different
    6·1 answer
  • Which ion has smaller size and why?Mg++ or Na+.​
    6·1 answer
  • Is silicon a better conductor of electricity than sulfur
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!