Question

if the density of iron is 7900 kg^-3 then its relative density is?

Answer 1

Hey dear here is your answer

Relative density = Density of substance
                             Density of water at 4oC 
                   
                          = 7900 kg / m3
                              1000 kg / m3

                        = 7.9
Hence, as d relative density of iron is more than 1, 

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Answer 2

Answer:

7.9

Explanation:

as 1 kg is equal to 1000 g 7900 os divided by 1000 to get 7.9