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Question

18.72 g of substance x 1.81 cm^3 What will be the density measured in correct significant figures


Solution

Mass(m) = 18.72g
volume(v) = 1.81cm³

Density = m/v
                =18.72/1.81
                =10.3g/cm^3
1.81 has three significant figures while 18.72 has four. Three significant figures is less precise than four, so the answer has three significant figures
 

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