Question

10 a rectangular block of copper metal weighs 1896 g with dimensions 8.4 cm by 5.5 cm by 4.6 cm. what is the density of copper? a 9.00 g/cm³ b 8.50 g/cm³ c 7.80 g/cm³ d 8.90 g/cm³

Explanation:

Step1: Calculate volume of block

$V = l\times w\times h=8.4\times5.5\times4.6 = 212.52\ cm^{3}$

Step2: Calculate density

The formula for density is $
ho=\frac{m}{V}$, where $m = 1896\ g$ and $V = 212.52\ cm^{3}$. So $
ho=\frac{1896}{212.52}\approx8.92\ g/cm^{3}$

Answer:

D. 8.90 g/cm³ (the closest option to the calculated value)