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stiks02 [169]
3 years ago
12

Large objects that form dense gravity wells in space A. Galaxies B. Star C. Nebulae D. Black holes.​

Chemistry
2 answers:
USPshnik [31]3 years ago
6 0
D is the right answer , ur welcome sir
BigorU [14]3 years ago
5 0

Answer:

D. Black Holes

Explanation:

Black holes are large objects that form dense gravity wells in space. Their gravitational pull is so strong that even light cannot escape it. 

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How many moles of Boron (B) are in 5.03 x 1024 B atoms?
goldfiish [28.3K]

Hey there!:

Number of moles =   ( number of atoms / 6.023*10²³ atoms )

given number of atoms = 5.03*10²⁴

Therefore:

Number of moles B = 5.03*10²⁴ / 6.023*10²³

Number of moles B = 8.35 moles

Hope that helps!


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3 years ago
A beaker is filled to the 500 mL mark with alcohol. What increase in volume (in mL) does the beaker contain when the temperature
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Answer:

"1.4 mL" is the appropriate solution.

Explanation:

According to the question,

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By putting the given values, we get

           =1.12\times 10^{-4}\times 500\times 25

           =1.12\times 10^{-4}\times 12500

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Explanation:

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