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Nuetrik [128]
3 years ago
6

If a star is 300 light years away from Earth, how long does it take light from that star to reach Earth?

Chemistry
1 answer:
Salsk061 [2.6K]3 years ago
8 0

Answer: It would take 300 light years to reach Earth.

Explanation:

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I'm not sure what the answer is
Talja [164]

Answer:

I think is A

Explanation: i'm not sure if im right.

4 0
2 years ago
What is the mass of 3.2 moles of Sulfur?​
FinnZ [79.3K]

Answer:

820.864 g

Explanation:

1) The atomic mass of sulfur (found from the periodic table) is 32.065 amu. Use this mass to find the molar mass of Sulfur. Sulfur is S8 so the molar mass of sulfur is:

8 × 32.065 = 256.52 g/mol

2) To find the mass use the formula:

m = n × M where <em>m</em><em> </em>is the mass, <em>n</em><em> </em>is the number of moles, and <em>M</em><em> </em>is the molar mass.

3)

m \: = 3.2 \times 256.52

m = 820.864 \: g

8 0
2 years ago
Which of the following best describes the kinetic theory?
valentina_108 [34]

Answer:B

Explanation:

Atoms and molecules are always moving or vibrating. (just took the test)

5 0
2 years ago
Read 2 more answers
Hi! This is a science question...
Studentka2010 [4]

Answer:

C: remaining at rest

Explanation:

Acceleration (a) is the change in velocity (Δv), remaining at rest is not changing the velocity.

8 0
2 years ago
Description of how the combined gas law must be modified to introduce the number of moles
telo118 [61]
So the ideal gas law is pv=nrt
The letter n stands for the number of moles. divide both side by rt to isolate.
pv/rt=n
8 0
3 years ago
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