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Orlov [11]
3 years ago
5

What would be the mass, in grams, of 1.505 x 1023 molecules of carbon disulfide?

Chemistry
1 answer:
Sergio [31]3 years ago
5 0

Answer:

19g

Explanation:

Given:

  Number of molecules  = 1.505 x 10²³molecules

 

 Formula of compound  = CS₂

Unknown:

Mass of the compound

Solution:

 A mole of every substance contains 6.02 x 10²³molecules. Using this we can find the number of moles from number of molecules given;

    6.02 x 10²³molecules makes up 1 mole of a substance

     1.505 x 10²³molecules will contain \frac{1.505 x 10^{23} }{6.02 x 10^{23} }   = 0.25mole of CS₂  

Mass of CS₂  = number of moles x molar mass

 Molar mass of CS₂  = 12 + 2(32) = 76g/mol

 Mass of CS₂  = 0.25 x 76 = 19g

 

             

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