If the mass of a material is 47 grams and the volume of the material is 11 cm^3, what would the density of the material be?

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The density is:  " 4  g / cm³ " .
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                    →  or;  round to:  " 4.2728 g / cm³ " .
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Explanation:
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Density, "D" =
        mass, "m" [in grams, "g"] / Volume, "V" (mL or cm³;  in this case: "cm³ ") ;

or:  " D = m / V " ; 

Note that "Density, "D" ;  is expressed in terms of "mass per UNIT volume" .
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   47 g / 11 cm³   =  (47 / 11) g / cm³ ;

                           =  4.2727272727272727...   g / cm³ ;
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 →  Density,  "D"  =  " 4  g / cm³ " .
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→  or, round to:           " 4.2728 g / cm³ " .
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Determine the  wavelength of light emitted when an electron  in an li2+ ion  makes a transition from an orbital with n  =  6 to an orbital with n  = 5.