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nadya68 [22]
3 years ago
12

HELP ASAP 20 OR MORE POINTS!!!!

Chemistry
2 answers:
pishuonlain [190]3 years ago
6 0
<h2>YeS im Am fRom pLanet k12 And brinG anD imPortant MesSage </h2>

  • The answer to your question is, <u><em>There are only so many ways matter can arrange itself within that infinite universe.</em></u>

<h2><em>Also if your on the same test as me heres some other sTuff that was on my test </em></h2><h2><em> </em></h2>

 Question 1 (1 point)  

In Brian Greene's "A Physicist Explains Why Parallel Universes May Exist", what reason does Greene give for why he believes parallel universes may exist?

  • <em>Answer: There are only so many ways matter can arrange itself within that infinite universe.</em>

<em>   </em>

Question 2 (1 point)  

Choose the best explanation for why we experience the Mandela Effect.

  • <em>Answer: Our brains tend to fill in information that we cannot readily recall and make associations that are not true.</em>

Question 3 (1 point)  

From the article "Time Travel Is A Fun Science Fiction Story But Could It Be Real?", Albert Einstein's Theory of Relativity is described as what?

 

  • <em>Answer:  The pulling force of gravity causes space to curve and causes time to slow down.</em>

Question 4 (1 point)  

From the video " Are Wormholes The Answer To Time Travel?", how are worm holes described?

  • <em>Answer:   A tunnel in space connecting two regions very distant from each other. A "short cut" through space</em>

Question 5 (1 point)  

Many scientists think human cloning is possible, so why haven't we made human clones yet?

  • <em>Answer:  Human cloning is extremely controversial and many people believe it is unethical</em>

<h2><em>HOPE THIS HELPS ANYONE IF IT DOES THANK AND RATE FOR A FREE COOKIE :D </em></h2>
s2008m [1.1K]3 years ago
4 0

I am just putting in an answer so you can give the messiah brainliest.

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Would the N=O bond in HNO2 be longer, shorter, or the same length as the N-O bonds in NO2-?
aivan3 [116]

Explanation:

Bond order is inversely proportional to the bond length.

B.O\propto \frac{1}{B.L}

In HNO_2 molecule. one nitrogen is double bonded to nitrogen and one oxygen is single bonded to nitrogen and hydrogen bond.

  • Bond order between the (N=O) bond is 2 which means that bond length between the (N=O) bond is shorter than that of the N-O bond.
  • Bond order between the (N-O) bond is 1 which means that bond length of the N-O bond is longer than that of the bond length of (N=O) bond.
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3 years ago
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The sun radiates different type of Electromagnetic energy (TRUE or FALSE)
Paha777 [63]
That statment is true
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3 years ago
A 10.-liter flask at a given temperature and pressure contains 6.0 × 1023 molecules of hydrogen gas. Under the same conditions o
valentina_108 [34]

Answer:

The same number of molecules, 6.0 × 10²³ molecules.

Explanation:

The amount of any given gas that can be stored in a container depends on the <u>temperature, pressure and volume </u>of the container. It does not depend on the nature (or identity) of the gas.

So if a 10-liter flask contains 6.0 × 10²³ molecules of hydrogen gas, it will contain the same amount of molecules of any other gas when temperature and pressure remain constant.

6 0
3 years ago
Sound travels most quickly through? a gas, liquid. Solid
aleksley [76]

Answer:

solids

Explanation:

through solids because the molecules are closer together

4 0
3 years ago
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A 1.67-g sample of solid silver reacted in excess chlorine gas to give a2.21-g sample of pure solid Agcl.The heat given off in t
kotegsom [21]

<u>Given:</u>

Mass of Ag = 1.67 g

Mass of Cl = 2.21 g

Heat evolved = 1.96 kJ

<u>To determine:</u>

The enthalpy of formation of AgCl(s)

<u>Explanation:</u>

The reaction is:

2Ag(s) + Cl2(g) → 2AgCl(s)

Calculate the moles of Ag and Cl from the given masses

Atomic mass of Ag = 108 g/mol

# moles of Ag = 1.67/108 = 0.0155 moles

Atomic mass of Cl = 35 g/mol

# moles of Cl = 2.21/35 = 0.0631 moles

Since moles of Ag << moles of Cl, silver is the limiting reagent.

Based on reaction stoichiometry: # moles of AgCl formed = 0.0155 moles

Enthalpy of formation of AgCl = 1.96 kJ/0.0155 moles = 126.5 kJ/mol

Ans: Formation enthalpy = 126.5 kJ/mol


6 0
3 years ago
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