Astudent is given a cube of metal that is known to have mass of 125.0 grams. she measures the mass of the metal three different times with the following results: 125.1 g, 124.8 g, 125.g. what can be said about her precision and accuracy?

Her results are precise and accurate.

Explanation:

Precision is the ability to reproduce the same result in an experimental set up. From the results obtained, we can see that she was to a large extent able to replicate nearly the same values throughout the experimental set up.

Accuracy is the closeness of the observed value to the true value. We can conclude that she was able to obtain an accurate result which mimics the true value expected from the experimental set up.

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.