7.32 moles of Chromium is present in 4.41 × 10²⁴ atoms. 
<h3>How to find the number of moles ?</h3>
Number of moles = 
       
<h3>What is Avogadro's Number ?</h3>
Avogadro's number is the number of particles in one mole of substance. 6.022 × 10²³ is known as Avogadro's Constant / Avogadro's Number. 
Avogadro's Number = 6.022 × 10²³
Now put the values in above formula we get 
Number of moles = 
                              = 
                              = 7.32 moles 
Thus from the above conclusion we can say that 7.32 moles of Chromium is present in 4.41 × 10²⁴ atoms. 
Learn more about the Avogadro's Number here: brainly.com/question/1581342
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The correct answer for this question would be option B. The common name of the group whose members are characterized by endoskeleton and a unique water vascular system are called the <span> Echinoderms. Examples of echinoderms are starfish, sea urchin, feather stars and sea cucumbers. Hope this is the answer that you are looking for.</span>
        
                    
             
        
        
        
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