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timofeeve [1]
3 years ago
15

Use the central ideas to write a summary of the last chapter of A Black Hole Is NOT a Hole.

Chemistry
1 answer:
Anna35 [415]3 years ago
5 0

Answer:

Newton had important theories about gravity, but Einstein developed a new theory of space and gravity. He thought that space was like a blanket that bends and twists. After that, scientists began to theorize that black holes could exist.

Explanation:

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The absorbance of an equilibrium mixture containing FeSCN2 was measured at 447 nm and found to be 0.347. What is the equilibrium
Ksenya-84 [330]

Answer:

The concentration is C = 1.11 mol/L

Explanation:

From the question we are told that

     The absorbance is  A = 0.347

       The length is  l =  447 nm  =  447 *10^{-7} \ cm

     

Generally absorbance is mathematically represented as

        A =  \epsilon*  C * l

where \epsilon is the molar absorptivity of  FeSCN2  with a value \epsilon  =  7.0*10^3 L/cm/mol

 and  C is the equilibrium concentration of FeSCN2

So  

       C = \frac{A}{\epsilon *  l  }

substituting values

        C = \frac{0.347}{7.0*10^{3} *  447 *10^{-7}  }

         C = 1.11 mol/L

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3 years ago
What is a particle diagram to illustrate the composition of air
navik [9.2K]
A diagram of the composition of air would be the air's chemical formula and it's structure. 
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3 years ago
What is the starting molecule for glycolysis?
meriva
Glucose is the starting molecule for glycolysis.
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Which type of hybridization is observed when central atom is located at the centre of regular tetrahedron
Ann [662]

Answer:

sp3 hybridization

Explanation:

Hybridization means the mixing of atomic orbitals to yield hybrid orbitals with characteristics that are different from that of the isolated atomic orbitals before the combination.

sp3 hybridization occurs when one s orbital is mixed with three p orbitals to yield four sp3 hybrid orbitals which can be used to bond to a central atom.

The central atom is then located at the center of a regular tetrahedron at a bond angle of 109°.

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Can anyone tell me whether N2 bonds or Cl2 bonds are stronger? Thanks!
Nadusha1986 [10]

Answer:

Cl2 bonds are stronger!!!!!

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