A 1.0 ft × 1.0 ft × 1.0 ft cube of iridium (density 22.5 g/cm³) has a mass of 1.5 lb.
A cube of iridium, whose dimensions are 1.0 ft × 1.0 ft × 1.0 ft, has a volume of:
[tex]V = 1.0ft \times 1.0ft \times 1.0ft = 1.0 ft^{3}[/tex]
We will convert 1.0 ft³ to cm³ using the conversion factor 1 ft = 30.48 cm.
[tex]1.0 ft^{3} \times (\frac{30.48cm}{1ft} )^{3} = 30 cm^{3}[/tex]
A cube of 30 cm³ of iridium has a density of 22.5 g/cm³. The mass corresponding to the cube is:
[tex]30 cm^{3} \times \frac{22.5g}{cm^{3} } = 6.8 \times 10^{2} g[/tex]
Finally, we will convert 6.8 × 10² g to lb using the conversion factor 1 lb = 453.6 g.
[tex]6.8 \times 10^{2} g \times \frac{1lb}{453.6g} = 1.5 lb[/tex]
A 1.0 ft × 1.0 ft × 1.0 ft cube of iridium (density 22.5 g/cm³) has a mass of 1.5 lb.
You can learn more about density here: https://brainly.com/question/18320053
