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Slav-nsk [51]
2 years ago
15

When light strikes a transparent material, most of the light is absorbed or reflected.

Chemistry
2 answers:
tresset_1 [31]2 years ago
7 0

The answer is false........

Monica [59]2 years ago
4 0
When light strikes a transparent material, most of the light passes through it it doesn't absorb or reflect it 
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A sample of 87.6 g of carbon is reacted with 136 g of
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Answer:

A. fluorine, 1.79 moles

Explanation:

Given parameters:

Mass of carbon  = 87.7g

Mass of fluorine gas  = 136g

Unknown:

The limiting reactant and the maximum amount of moles of carbon tetrafluoride that can be produced  = ?

Solution:

   Equation of the reaction:

             C    +   2F₂ →   CF₄  

let us find the number of the moles the given species;

  Number of moles = \frac{mass}{molar mass}  

  C;   molar mass = 12;

            Number of moles  = \frac{87.7}{12}   = 7.31moles

 F;  molar mass  = 2(19)  = 38g/mol

             Number of moles  = \frac{136}{38}   = 3.58moles

 So;

   From the give reaction:

          1 mole of C requires 2 moles of F₂

         7.31 moles of C will then require 2 x 7.31 moles of F₂ = 14.62moles

But we have 3.58 moles of the F₂;

  Therefore, the reactant in short supply is F₂ and it is the limiting reactant;

 So;

       2 moles of F₂ will produce  mole of CF₄  

       3.58 moles of F₂ will then produce \frac{3.58}{2}  = 1.79moles of CF₄

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2 years ago
How are scientific questions answered?
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Answer:

B .Through testing a theory about the physical world

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