Arectangular block of copper metal weighs 1896 g. the dimensions of the block are 8.4cm by 5.5 cm by 4.6 cm. from this data, what is the density of copper?

The density of copper is 8.9 g/cm³.

V = lwh = 8.4 cm × 5.5 cm × 4.6 cm = 212 cm³

Density = mass/volume = 1896 g/212 cm³ = 8.9 g/cm³

Note: The answer can have only two significant figures because that is all you gave for the dimensions of the block.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.